Isaiah Chapter 1

Jun 2

Introduction to the Book of Isaiah

The book of Isaiah stands as one of the greatest prophetic books in all of Scripture. It is majestic in doctrine, sweeping in historical scope, rich in Messianic prophecy, severe in its warnings against sin, and glorious in its promises of redemption and kingdom restoration. Isaiah has often been called “the prince of the prophets” because of the literary beauty, theological depth, and prophetic precision found throughout his book. His message reaches from the immediate crisis of Judah in the eighth century before Christ all the way to the first coming of Christ, the suffering of the Messiah, the future restoration of Israel, the millennial reign of Christ, and the final new heavens and new earth.

The name Isaiah means “The LORD is salvation,” and that meaning captures the message of the entire book. Isaiah exposes the sin of Judah, announces coming judgment, calls the people to repentance, and reveals that salvation belongs to the LORD alone. The people of Judah could not save themselves by religious ritual, political alliances, military strength, wealth, or human wisdom. Their only hope was the holy God of Israel, who judges sin but also provides redemption through His Servant, the Messiah.

Isaiah 1:1, “The vision of Isaiah the son of Amoz, which he saw concerning Judah and Jerusalem in the days of Uzziah, Jotham, Ahaz, and Hezekiah, kings of Judah.”

This opening verse identifies Isaiah as the son of Amoz and places his ministry during the reigns of Uzziah, Jotham, Ahaz, and Hezekiah, kings of Judah. This means Isaiah ministered during a long and turbulent period in Judah’s history. He witnessed national prosperity, spiritual corruption, political instability, Assyrian aggression, and the growing certainty of judgment. His prophetic burden was especially directed toward Judah and Jerusalem, though his prophecies also address surrounding nations and the ultimate purposes of God for the whole earth.

Isaiah ministered in the southern kingdom of Judah after the kingdom of Israel had been divided. The northern kingdom, Israel, had already fallen deeply into apostasy and would eventually be conquered by Assyria in 722 B.C. Judah was also drifting into spiritual hypocrisy, idolatry, injustice, and rebellion against the LORD. Though the temple still stood in Jerusalem and the people still practiced religious ceremonies, their hearts were often far from God. Isaiah’s message struck directly at that kind of empty religion.

Isaiah 1:2, “Hear, O heavens, and give ear, O earth: for the LORD hath spoken, I have nourished and brought up children, and they have rebelled against me.”

The book opens like a courtroom scene. Heaven and earth are summoned as witnesses because the LORD has a charge against His covenant people. Israel and Judah were not ignorant pagans without revelation. They were the people whom God had nourished, delivered, instructed, and blessed. Yet they rebelled against Him. This makes their sin more serious because they sinned against light, privilege, covenant, and mercy.

Isaiah 1:3, “The ox knoweth his owner, and the ass his master’s crib: but Israel doth not know, my people doth not consider.”

Isaiah compares the people unfavorably to animals. Even an ox knows its owner, and a donkey knows where it is fed, but Israel failed to know the LORD who had redeemed and sustained them. The issue was not intellectual inability, it was moral and spiritual rebellion. They did not consider, meaning they refused to weigh the truth, repent, and return to God.

The Historical Setting of Isaiah

Isaiah’s ministry took place during the rise of the Assyrian Empire. Assyria was brutal, expansionist, and feared throughout the ancient Near East. The northern kingdom of Israel tried to survive through political maneuvering, military alliances, and rebellion against Assyria, but it eventually fell. Judah faced the same pressure. Kings and leaders had to decide whether they would trust the LORD or place their confidence in foreign powers such as Assyria or Egypt.

This historical tension is one of the major themes in Isaiah. Would Judah trust God, or would Judah trust man? Would the king believe the word of the LORD, or would he lean on diplomacy, military calculation, and political compromise? Isaiah repeatedly exposes the foolishness of relying on human strength while rejecting divine counsel.

Isaiah 31:1, “Woe to them that go down to Egypt for help, and stay on horses, and trust in chariots, because they are many, and in horsemen, because they are very strong, but they look not unto the Holy One of Israel, neither seek the LORD!”

This verse captures one of Isaiah’s great warnings. Judah’s danger was not merely Assyria outside the walls, it was unbelief inside the heart. The people were tempted to trust Egypt because Egypt had horses, chariots, and military resources. But Isaiah declares woe upon those who look to worldly power while refusing to seek the Holy One of Israel.

Isaiah’s Call to Ministry

One of the most important passages in the book is Isaiah chapter 6, where Isaiah sees the LORD in His holiness. This vision shapes the entire prophetic ministry of Isaiah. Before Isaiah can speak rightly to the people, he must first see God rightly. He sees the LORD enthroned, high and lifted up, surrounded by seraphim crying out concerning His holiness.

Isaiah 6:1, “In the year that king Uzziah died I saw also the LORD sitting upon a throne, high and lifted up, and his train filled the temple.”

Isaiah 6:2, “Above it stood the seraphims: each one had six wings, with twain he covered his face, and with twain he covered his feet, and with twain he did fly.”

Isaiah 6:3, “And one cried unto another, and said, Holy, holy, holy, is the LORD of hosts: the whole earth is full of his glory.”

The triple declaration of God’s holiness is central to Isaiah’s theology. God is not merely greater than man, He is utterly holy, morally pure, sovereign, majestic, and set apart from all creation. The phrase “the LORD of hosts” emphasizes His rule over the armies of heaven and earth. No earthly empire, including Assyria, Babylon, Egypt, or any other power, can rival the LORD.

Isaiah’s immediate response is not pride, confidence, or self promotion. It is conviction.

Isaiah 6:5, “Then said I, Woe is me! for I am undone, because I am a man of unclean lips, and I dwell amid a people of unclean lips: for mine eyes have seen the King, the LORD of hosts.”

True ministry begins with a right view of God and a humbled view of self. Isaiah recognizes his own uncleanness and the uncleanness of his people. He does not stand above Judah as a detached critic, he stands as a sinful man cleansed by grace and commissioned by God.

Isaiah 6:8, “Also I heard the voice of the LORD, saying, Whom shall I send, and who will go for us? Then said I, Here am I, send me.”

Isaiah’s commission came from God Himself. His message would not always be received. In fact, much of his ministry would harden those who refused to hear. Yet Isaiah was faithful. The preacher and teacher of God’s Word must understand this principle, faithfulness is not measured merely by visible results, but by obedience to the truth God has given.

Major Themes in Isaiah

The first major theme is the holiness of God. Isaiah repeatedly calls God “the Holy One of Israel.” This title appears throughout the book and emphasizes both God’s covenant relationship with Israel and His moral separation from their sin. The LORD is not like the idols of the nations. He is living, sovereign, righteous, and holy.

Isaiah 40:25, “To whom then will ye liken me, or shall I be equal? saith the Holy One.”

The second major theme is sin and judgment. Isaiah does not treat sin lightly. Judah’s sins included idolatry, hypocrisy, pride, drunkenness, injustice, oppression, corrupt leadership, false worship, and unbelief. God’s covenant people could not hide behind religious ceremony while living in rebellion.

Isaiah 1:11, “To what purpose is the multitude of your sacrifices unto me? saith the LORD: I am full of the burnt offerings of rams, and the fat of fed beasts, and I delight not in the blood of bullocks, or of lambs, or of he goats.”

Isaiah 1:15, “And when ye spread forth your hands, I will hide mine eyes from you: yea, when ye make many prayers, I will not hear: your hands are full of blood.”

These verses show that God rejects worship that is outwardly religious but inwardly corrupt. Sacrifices, prayers, feasts, and ceremonies are meaningless when the heart is rebellious. This principle remains vital. God is not impressed by religious appearance when there is no repentance, faith, obedience, or righteousness.

The third major theme is salvation by the LORD. Though Isaiah announces severe judgment, he also proclaims grace, cleansing, forgiveness, and restoration. God calls sinners to repentance and offers mercy.

Isaiah 1:18, “Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be white as snow, though they be red like crimson, they shall be as wool.”

This is one of the great evangelistic invitations in the Old Testament. God does not deny the stain of sin, but He promises cleansing. The sinner cannot wash himself clean, but the LORD can make scarlet sins white as snow.

The fourth major theme is the Messiah. Isaiah contains some of the clearest Messianic prophecies in the Old Testament. He speaks of the virgin birth, the divine Son, the righteous King, the Spirit anointed Servant, the suffering Substitute, and the future reign of Messiah over Israel and the nations.

Isaiah 7:14, “Therefore the Lord himself shall give you a sign, Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel.”

Isaiah 9:6, “For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder, and his name shall be called Wonderful, Counseller, The mighty God, The everlasting Father, The Prince of Peace.”

Isaiah 53:5, “But he was wounded for our transgressions, he was bruised for our iniquities: the chastisement of our peace was upon him, and with his stripes we are healed.”

Isaiah 53 is especially important because it reveals the substitutionary suffering of the Messiah. The Servant of the LORD suffers not for His own sin, but for the sins of others. This points directly to the atoning death of Jesus Christ. From a Baptist and conservative evangelical perspective, Isaiah 53 is one of the clearest Old Testament prophecies of penal substitutionary atonement, where Christ bears the judgment sinners deserve so that believers may receive peace with God.

The fifth major theme is the future restoration of Israel and the kingdom reign of Messiah. Isaiah does not reduce Israel’s promises into mere symbolism. He looks forward to a real restoration, a righteous King, peace among the nations, Jerusalem exalted, and the knowledge of the LORD covering the earth. This fits naturally with a literal, grammatical, historical reading of prophecy and with a premillennial understanding of Christ’s future kingdom.

Isaiah 2:2, “And it shall come to pass in the last days, that the mountain of the LORD’S house shall be established in the top of the mountains, and shall be exalted above the hills, and all nations shall flow unto it.”

Isaiah 2:3, “And many people shall go and say, Come ye, and let us go up to the mountain of the LORD, to the house of the God of Jacob, and he will teach us of his ways, and we will walk in his paths, for out of Zion shall go forth the law, and the word of the LORD from Jerusalem.”

Isaiah 11:6, “The wolf also shall dwell with the lamb, and the leopard shall lie down with the kid, and the calf and the young lion and the fatling together, and a little child shall lead them.”

Isaiah 11:9, “They shall not hurt nor destroy in all my holy mountain, for the earth shall be full of the knowledge of the LORD, as the waters cover the sea.”

These passages anticipate a future order that has not yet been fully realized in history. The nations have not yet beaten their swords into plowshares, Jerusalem is not yet the acknowledged center of divine instruction for the nations, and the earth is not yet full of the knowledge of the LORD as the waters cover the sea. These prophecies point forward to the kingdom reign of Christ.

The Structure of Isaiah

The book of Isaiah is commonly divided into two major sections. Isaiah chapters 1 through 39 emphasize judgment, warning, and the historical crisis involving Assyria. Isaiah chapters 40 through 66 emphasize comfort, redemption, the Servant of the LORD, restoration, and future glory. This does not mean the first section contains no hope or the second section contains no judgment. Both themes appear throughout the book. However, the overall movement of the book goes from condemnation to consolation, from exposure of sin to the promise of salvation, from the failure of Judah’s kings to the glory of the coming King.

Isaiah chapters 1 through 12 introduce Judah’s sin, the call to repentance, Isaiah’s commission, and the promise of the Messianic King. Isaiah chapters 13 through 23 contain judgments against the nations. Isaiah chapters 24 through 27 look ahead to worldwide judgment and future restoration. Isaiah chapters 28 through 35 give warnings against unbelief and misplaced trust. Isaiah chapters 36 through 39 provide the historical account of Hezekiah, Assyria, and the coming Babylonian concern. Isaiah chapters 40 through 48 emphasize God’s greatness, His sovereignty over idols, and His promise of deliverance. Isaiah chapters 49 through 57 focus heavily on the Servant of the LORD. Isaiah chapters 58 through 66 address true worship, future glory, judgment, restoration, and the final purposes of God.

Isaiah and the New Testament

Isaiah is one of the most quoted prophetic books in the New Testament. The New Testament writers saw Isaiah as directly pointing to Jesus Christ. The virgin birth, the ministry of John the Baptist, the Galilean ministry of Christ, the rejection of Messiah, the suffering Servant, the inclusion of Gentiles, and the future hope of Israel are all connected to Isaiah.

Matthew 1:22, “Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet, saying,”

Matthew 1:23, “Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.”

Matthew directly applies Isaiah 7:14 to the birth of Jesus Christ. The child born of the virgin is not merely a political sign in ancient Judah, He is ultimately fulfilled in Christ, who is Emmanuel, God with us.

Matthew 3:3, “For this is he that was spoken of by the prophet Esaias, saying, The voice of one crying in the wilderness, Prepare ye the way of the Lord, make his paths straight.”

John the Baptist fulfilled Isaiah’s prophecy as the forerunner who prepared the way for the Messiah. This shows that Isaiah’s message was not confined to his own generation. It carried forward into the redemptive work of Christ.

Luke 4:17, “And there was delivered unto him the book of the prophet Esaias. And when he had opened the book, he found the place where it was written,”

Luke 4:18, “The Spirit of the Lord is upon me, because he hath anointed me to preach the gospel to the poor, he hath sent me to heal the brokenhearted, to preach deliverance to the captives, and recovering of sight to the blind, to set at liberty them that are bruised,”

Luke 4:19, “To preach the acceptable year of the Lord.”

Luke 4:21, “And he began to say unto them, This day is this scripture fulfilled in your ears.”

Jesus Himself read from Isaiah and declared its fulfillment in His ministry. This confirms that Isaiah is a Christ centered prophetic book. It reveals the person, work, suffering, glory, and kingdom of the Lord Jesus Christ.

Theological Importance of Isaiah

Isaiah gives a massive theology of God. It reveals God as holy, sovereign, Creator, Redeemer, Judge, King, Savior, and covenant keeper. It shows that God rules over Israel, Judah, Assyria, Babylon, Egypt, and all nations. Human rulers rise and fall, but the LORD reigns forever.

Isaiah 40:8, “The grass withereth, the flower fadeth: but the word of our God shall stand for ever.”

This verse is essential to Isaiah’s message. Kingdoms fade, men die, nations collapse, and human strength fails, but the Word of God stands forever. This is why Isaiah remains relevant. His prophecies are not merely ancient religious literature, they are the revealed Word of the living God.

Isaiah also gives a clear doctrine of human sin. Man is not basically good and in need of minor improvement. He is polluted, rebellious, proud, and unable to save himself. Yet Isaiah also gives a glorious doctrine of grace. God provides cleansing, redemption, substitutionary atonement, restoration, and future glory.

Isaiah 59:2, “But your iniquities have separated between you and your God, and your sins have hid his face from you, that he will not hear.”

Isaiah 59:16, “And he saw that there was no man, and wondered that there was no intercessor: therefore his arm brought salvation unto him, and his righteousness, it sustained him.”

The problem is sin, and the solution is divine salvation. Man cannot bridge the gap by his own righteousness. God Himself must act. That truth reaches its fullest expression in Christ.

Christ in Isaiah

The book of Isaiah presents Christ in multiple prophetic portraits. He is Immanuel, God with us. He is the child born and the Son given. He is the Branch from Jesse’s line. He is the Servant of the LORD. He is the suffering Substitute. He is the anointed preacher of good news. He is the righteous King who will reign in justice. He is the Redeemer who comes to Zion.

Isaiah 11:1, “And there shall come forth a rod out of the stem of Jesse, and a Branch shall grow out of his roots:”

Isaiah 11:2, “And the spirit of the LORD shall rest upon him, the spirit of wisdom and understanding, the spirit of counsel and might, the spirit of knowledge and of the fear of the LORD.”

Isaiah 59:20, “And the Redeemer shall come to Zion, and unto them that turn from transgression in Jacob, saith the LORD.”

Isaiah’s Christology is profound. The Messiah is both truly human, born as a child from David’s line, and truly divine, called “The mighty God.” He suffers in humility, yet reigns in glory. He is rejected by men, yet exalted by God. He dies for transgressors, yet establishes everlasting righteousness.

The Message of Isaiah for Today

Isaiah speaks with force to every generation. It warns that religious activity without a surrendered heart is offensive to God. It warns that nations cannot escape the judgment of God. It warns that pride, injustice, immorality, and unbelief bring consequences. It also declares that God is merciful, Christ is sufficient, sin can be forgiven, and the kingdom of God will triumph.

Isaiah reminds believers that God is not nervous, confused, weak, or reactive. He sits enthroned. His Word stands forever. His promises cannot fail. His Messiah has come once to suffer for sin, and He will come again to reign in righteousness.

Isaiah 46:9, “Remember the former things of old: for I am God, and there is none else, I am God, and there is none like me,”

Isaiah 46:10, “Declaring the end from the beginning, and from ancient times the things that are not yet done, saying, My counsel shall stand, and I will do all my pleasure:”

The God of Isaiah declares the end from the beginning. He is sovereign over history. This makes Isaiah one of the strongest books in Scripture for understanding prophecy, judgment, salvation, Israel, the nations, the Messiah, and the coming kingdom.

Summary

The book of Isaiah is a prophetic masterpiece centered on the holiness of God, the sin of man, the certainty of judgment, the promise of salvation, the glory of the Messiah, and the future restoration of Israel and the nations under the reign of the LORD. Isaiah confronts dead religion, political unbelief, moral corruption, and national pride. At the same time, it offers one of the clearest revelations of grace in the Old Testament.

Isaiah’s message can be summarized in the meaning of his name, “The LORD is salvation.” Judah could not save itself. The nations could not save themselves. Man cannot save himself. Salvation belongs to the LORD, and that salvation is ultimately revealed in Jesus Christ, the virgin born Son, the suffering Servant, the mighty God, the Redeemer of Israel, and the coming King.

Isaiah 1

Indictment and Invitation

The opening chapter of Isaiah presents the LORD as bringing a covenant lawsuit against Judah and Jerusalem. The chapter moves from indictment to invitation, from exposure of sin to an offer of cleansing, and from corrupt worship to the promise of future redemption. Isaiah does not begin with shallow comfort. He begins with the holiness of God, the rebellion of Judah, the emptiness of religious activity without repentance, and the mercy of God offered to a sinful people. The notes you provided emphasize Isaiah’s historical setting, Judah’s spiritual condition, empty ritual worship, and the LORD’s promise to cleanse and restore Zion.

Isaiah 1:1

Introduction, The Vision of Isaiah the Son of Amoz

Isaiah 1:1, “The vision of Isaiah the son of Amoz, which he saw concerning Judah and Jerusalem in the days of Uzziah, Jotham, Ahaz, and Hezekiah, kings of Judah.”

Isaiah begins by identifying the nature of the book as “the vision of Isaiah.” This means the message is not merely Isaiah’s political commentary, personal reflection, national concern, or religious opinion. It is revelation from God. Isaiah saw what God revealed, and he spoke what God commanded. The prophetic office was not self appointed. A true prophet stood under divine authority and delivered the word of the LORD with covenantal seriousness.

The name Isaiah means “salvation is of the LORD,” and that meaning is fitting for the entire book. Isaiah exposes sin, announces judgment, warns against empty religion, confronts national rebellion, declares judgment upon the nations, and yet repeatedly points forward to the salvation God Himself will provide. Judah could not save itself through kings, armies, alliances, temple ritual, or national heritage. Salvation had to come from the LORD.

Isaiah is identified as “the son of Amoz.” This distinguishes him from other men in Scripture who bore the same name. Amoz should not be confused with Amos the prophet. Amos and Amoz are different names, and there is no biblical reason to identify them as the same person. Isaiah ministered in and around Jerusalem, and his message was especially directed “concerning Judah and Jerusalem.” Though his prophecies reach beyond Judah to Israel, Assyria, Babylon, Egypt, Moab, Damascus, Tyre, and even the whole earth, his central burden in this opening chapter is the southern kingdom and its capital city.

Isaiah ministered “in the days of Uzziah, Jotham, Ahaz, and Hezekiah, kings of Judah.” This places his ministry in the eighth century before Christ, during a time of political pressure, spiritual decline, and imperial threat. Uzziah’s reign had brought strength and prosperity, but pride marked the end of his life. Jotham was relatively stable, Ahaz was openly wicked, and Hezekiah brought significant reform. Isaiah therefore ministered across changing political administrations, but his message did not change with the mood of the king. He was not a court flatterer. He was a prophet of the Holy One of Israel.

Isaiah’s ministry overlapped with the rise of Assyria. The northern kingdom of Israel would fall to Assyria in 722 B.C., and Judah would later face terrifying Assyrian pressure. Judah was often caught between larger powers such as Egypt, Assyria, and Babylon. The temptation was always to trust foreign alliances instead of trusting the LORD. Isaiah’s message therefore confronts both personal sin and national unbelief. He exposes the folly of a people who still possessed the temple, sacrifices, Sabbaths, and feasts, yet whose hearts were far from God.

2 Kings 15:37, “In those days the LORD began to send against Judah Rezin the king of Syria, and Pekah the son of Remaliah.”

2 Chronicles 28:19, “For the LORD brought Judah low because of Ahaz king of Israel, for he made Judah naked, and transgressed sore against the LORD.”

The historical background matters because Isaiah 1 is not abstract moral teaching. Judah was under divine discipline. The nation had been wounded by enemies, weakened by poor leadership, corrupted by injustice, and hardened by sin. Yet the greatest danger was not Assyria, Syria, Edom, Philistia, or any foreign nation. The greatest danger was rebellion against the LORD.

The unity of Isaiah should also be affirmed. Some modern scholars divide Isaiah into multiple authors, often because they reject or diminish predictive prophecy. They struggle with the fact that Isaiah speaks of future events, including Babylonian judgment, Cyrus, and the coming Messiah, with remarkable precision. However, the New Testament treats Isaiah as one prophetic book from one prophet. John quotes from sections modern critics often divide and attributes both to Isaiah.

John 12:37, “But though he had done so many miracles before them, yet they believed not on him:”

John 12:38, “That the saying of Esaias the prophet might be fulfilled, which he spake, LORD, who hath believed our report? and to whom hath the arm of the Lord been revealed?”

John 12:39, “Therefore they could not believe, because that Esaias said again,”

John 12:40, “He hath blinded their eyes, and hardened their heart, that they should not see with their eyes, nor understand with their heart, and be converted, and I should heal them.”

John 12:41, “These things said Esaias, when he saw his glory, and spake of him.”

John cites Isaiah 53 and Isaiah 6 and attributes both to Isaiah. This is important because the authority of the New Testament confirms the prophetic unity of Isaiah. A conservative, Baptist, literal approach to Scripture should have no need to surrender predictive prophecy to unbelieving critical theories. The God who declares the end from the beginning is fully able to reveal future events through His prophet.

Isaiah 46:9, “Remember the former things of old: for I am God, and there is none else, I am God, and there is none like me,”

Isaiah 46:10, “Declaring the end from the beginning, and from ancient times the things that are not yet done, saying, My counsel shall stand, and I will do all my pleasure:”

Isaiah is also one of the most Messianic books in the Old Testament. It speaks of the virgin born child, the divine Son, the Branch from Jesse, the Servant of the LORD, the suffering Substitute, the Redeemer who comes to Zion, and the King who will reign in righteousness. For this reason Isaiah has often been called “the fifth Gospel.” That title is not Scripture, but it captures the fact that Isaiah gives a breathtaking prophetic witness to the person and work of Jesus Christ.

Isaiah 1:2 through Isaiah 1:4

The LORD’s Complaint Against Judah

Isaiah 1:2, “Hear, O heavens, and give ear, O earth: for the LORD hath spoken, I have nourished and brought up children, and they have rebelled against me.”

Isaiah 1:3, “The ox knoweth his owner, and the ass his master’s crib: but Israel doth not know, my people doth not consider.”

Isaiah 1:4, “Ah sinful nation, a people laden with iniquity, a seed of evildoers, children that are corrupters: they have forsaken the LORD, they have provoked the Holy One of Israel unto anger, they are gone away backward.”

The LORD summons heaven and earth as witnesses. This courtroom language reaches back to the covenant structure of Deuteronomy. When God made covenant with Israel, heaven and earth were called as witnesses against them. Isaiah now takes up that same covenantal pattern. Judah stands accused before the LORD, and creation itself is summoned to hear the charge.

Deuteronomy 30:19, “I call heaven and earth to record this day against you, that I have set before you life and death, blessing and cursing: therefore choose life, that both thou and thy seed may live:”

Deuteronomy 32:1, “Give ear, O ye heavens, and I will speak, and hear, O earth, the words of my mouth.”

The charge is deeply personal. The LORD says, “I have nourished and brought up children, and they have rebelled against me.” Judah’s rebellion was not merely violation of law, it was betrayal of relationship. God had redeemed Israel from Egypt, brought them through the wilderness, gave them the land, preserved them through the judges, established the Davidic line, gave them the temple, and repeatedly showed mercy. Yet they rebelled.

This makes Judah’s sin especially serious. They were not ignorant pagans without revelation. They had the Law, the covenants, the priesthood, the sacrifices, the promises, and the prophets. They had every reason to know the LORD and walk in obedience. Their rebellion was not caused by lack of light, but by rejection of light.

Isaiah then uses a humiliating comparison. The ox knows its owner, and the donkey knows its master’s crib, but Israel does not know. Even an animal knows where it belongs and who feeds it. Judah had become worse than an unreasoning beast because the nation had lost spiritual perception. The people did not “consider.” They did not stop, reason, repent, or weigh the reality of what God had done for them.

This is one of the great tragedies of sin. Sin does not make a man more thoughtful, free, and enlightened. It darkens the mind, hardens the conscience, corrupts the affections, and makes a man less reasonable. The rebellious sinner often thinks he is sophisticated, but Isaiah says the ox and donkey show more basic sense than God’s covenant people when they refuse to know their Master.

The LORD then piles up descriptions of Judah’s moral condition. They are a sinful nation, a people loaded down with iniquity, a seed of evildoers, and corrupting children. This is not a light diagnosis. Judah was not merely struggling. Judah was morally diseased, spiritually rebellious, and nationally corrupt. Their sin was not isolated to a few individuals. It characterized the nation.

They had “forsaken the LORD.” This is covenant abandonment. They had “provoked the Holy One of Israel unto anger.” This title, “the Holy One of Israel,” is one of Isaiah’s great names for God. It emphasizes both God’s covenant relationship with Israel and His moral purity. He belongs to Israel by covenant, but He is not like Israel in corruption. He is holy. Their sin therefore provoked righteous anger because they were defiling the name of the Holy One who had redeemed them.

They had “gone away backward.” This shows spiritual regression. Sin never leaves a people standing still. A nation, church, family, or man who turns away from God moves backward. Judah had not progressed into freedom. They had retreated into rebellion.

Romans 8:22, “For we know that the whole creation groaneth and travaileth in pain together until now.”

Creation groans under the effects of sin, and the disobedience of God’s people is not a small matter. When those who possess divine truth rebel against God, they bear witness falsely before the watching world. In Isaiah’s day, Judah’s sin had national consequences. In every age, the people of God must understand that privilege brings responsibility.

Isaiah 1:5 through Isaiah 1:9

The Desperate Condition of Judah

Isaiah 1:5, “Why should ye be stricken any more? ye will revolt more and more: the whole head is sick, and the whole heart faint.”

Isaiah 1:6, “From the sole of the foot even unto the head there is no soundness in it, but wounds, and bruises, and putrifying sores: they have not been closed, neither bound up, neither mollified with ointment.”

Isaiah 1:7, “Your country is desolate, your cities are burned with fire: your land, strangers devour it in your presence, and it is desolate, as overthrown by strangers.”

Isaiah 1:8, “And the daughter of Zion is left as a cottage in a vineyard, as a lodge in a garden of cucumbers, as a besieged city.”

Isaiah 1:9, “Except the LORD of hosts had left unto us a very small remnant, we should have been as Sodom, and we should have been like unto Gomorrah.”

The LORD now describes Judah as a body beaten from head to foot. The question, “Why should ye be stricken any more?” reveals both judgment and mercy. God had disciplined Judah, yet they had not repented. Every chastening should have awakened them, but instead they revolted more and more. Discipline without repentance only reveals deeper hardness.

The “whole head is sick” and the “whole heart faint.” The head speaks of leadership, thinking, judgment, and direction. The heart speaks of will, affection, courage, and spiritual life. Judah was diseased in both. Their leadership was corrupt, their inner life was weak, and the nation was morally collapsing. From the sole of the foot to the head, there was “no soundness.” The whole nation was spiritually infected.

The imagery of “wounds, and bruises, and putrifying sores” shows sin as more than legal guilt. Sin is also corruption and disease. It wounds, festers, spreads, and weakens. These sores had not been closed, bound up, or softened with ointment. In other words, Judah had not received healing because Judah had not submitted to the LORD’s remedy. They were suffering, but they were not repentant.

Isaiah also describes the visible consequences of Judah’s sin. Their country was desolate. Their cities were burned. Foreigners devoured their land before their eyes. These words fit the distress Judah experienced in the days of Ahaz, when surrounding nations attacked and weakened the kingdom.

2 Chronicles 28:5, “Wherefore the LORD his God delivered him into the hand of the king of Syria, and they smote him, and carried away a great multitude of them captives, and brought them to Damascus. And he was also delivered into the hand of the king of Israel, who smote him with a great slaughter.”

2 Chronicles 28:17, “For again the Edomites had come and smitten Judah, and carried away captives.”

2 Chronicles 28:18, “The Philistines also had invaded the cities of the low country, and of the south of Judah, and had taken Bethshemesh, and Ajalon, and Gederoth, and Shocho with the villages thereof, and Timnah with the villages thereof, Gimzo also and the villages thereof: and they dwelt there.”

2 Chronicles 28:19, “For the LORD brought Judah low because of Ahaz king of Israel, for he made Judah naked, and transgressed sore against the LORD.”

The suffering of Judah was not random. The LORD brought Judah low because of covenant rebellion and corrupt leadership. Ahaz encouraged moral decline and was continually unfaithful to the LORD. Rather than driving him to repentance, distress hardened him further.

2 Chronicles 28:22, “And in the time of his distress did he trespass yet more against the LORD: this is that king Ahaz.”

This is a sober warning. Trouble does not automatically sanctify. Suffering can humble a man, but it can also harden him if he refuses God’s correction. Ahaz is the kind of man who became worse under pressure. Judah, under his influence, continued down the same path.

“The daughter of Zion” is left like a cottage in a vineyard, a lodge in a cucumber field, and a besieged city. These images present Jerusalem as isolated, fragile, exposed, and surrounded. A small shelter in a field has no real strength. It stands alone after the harvest, temporary and vulnerable. That is how Judah appeared among the nations.

Yet verse 9 introduces mercy. “Except the LORD of hosts had left unto us a very small remnant,” Judah would have been like Sodom and Gomorrah. This means Judah deserved complete destruction, but God preserved a remnant. The doctrine of the remnant is central to Isaiah. God judges sin, but He preserves a people according to mercy and covenant promise.

Genesis 19:24, “Then the LORD rained upon Sodom and upon Gomorrah brimstone and fire from the LORD out of heaven;”

Genesis 19:25, “And he overthrew those cities, and all the plain, and all the inhabitants of the cities, and that which grew upon the ground.”

Sodom and Gomorrah were utterly overthrown. Judah deserved the same, but the LORD left a remnant. This remnant was not evidence of Judah’s merit. It was evidence of God’s mercy. This principle carries forward into Paul’s theology of Israel.

Romans 9:29, “And as Esaias said before, Except the Lord of Sabaoth had left us a seed, we had been as Sodoma, and been made like unto Gomorrha.”

Paul uses Isaiah 1:9 to show that Israel’s continued existence depends upon God’s mercy, not national worthiness. The same is true for every sinner. If God gave man only what justice demands, all would be lost. Salvation depends upon grace.

Isaiah 1:10 through Isaiah 1:15

God Hates Empty Religious Ceremony

Isaiah 1:10, “Hear the word of the LORD, ye rulers of Sodom, give ear unto the law of our God, ye people of Gomorrah.”

Isaiah 1:12, “When ye come to appear before me, who hath required this at your hand, to tread my courts?”

Isaiah 1:13, “Bring no more vain oblations, incense is an abomination unto me, the new moons and sabbaths, the calling of assemblies, I cannot away with, it is iniquity, even the solemn meeting.”

Isaiah 1:14, “Your new moons and your appointed feasts my soul hateth: they are a trouble unto me, I am weary to bear them.”

Isaiah 1:15, “And when ye spread forth your hands, I will hide mine eyes from you: yea, when ye make many prayers, I will not hear: your hands are full of blood.”

The LORD now addresses Judah with shocking language. He calls the rulers “rulers of Sodom” and the people “people of Gomorrah.” This is not because Judah had literally become those cities, but because their moral corruption made the comparison fitting. God is getting their attention. They would have been horrified to be compared to Sodom and Gomorrah, yet the LORD says the comparison is deserved.

Judah was still religious. They were still offering sacrifices. They still brought burnt offerings, rams, fattened animals, bulls, lambs, goats, incense, new moons, Sabbaths, assemblies, solemn meetings, appointed feasts, prayers, and lifted hands. Outwardly, religion continued. Inwardly, rebellion remained. God’s indictment is therefore not against sacrifice as He had commanded it in the Law, but against sacrifice divorced from repentance, faith, justice, and obedience.

This is a crucial distinction. The sacrificial system was ordained by God. The feasts were ordained by God. The Sabbath was ordained by God. The problem was not that Judah practiced biblical forms of worship. The problem was that they used outward forms as a covering for inward rebellion. They were trying to maintain religious ceremony while refusing moral submission.

God says, “I am full.” He had had enough. He says, “I delight not.” He says their offerings are vain. He calls their incense an abomination. He says He cannot endure their assemblies. He says His soul hates their appointed feasts. He is weary of bearing them. These are some of the strongest statements in Scripture against hypocritical worship.

This should sober every church, preacher, teacher, and believer. God does not accept worship merely because it is religious. He does not accept singing, giving, preaching, teaching, attendance, ordinances, prayers, or service when the heart is proud, corrupt, and unrepentant. External religion without inward truth is offensive to God.

1 Samuel 15:22, “And Samuel said, Hath the LORD as great delight in burnt offerings and sacrifices, as in obeying the voice of the LORD? Behold, to obey is better that sacrifice, and to hearken than the fat of rams.”

Psalm 51:16, “For thou desirest not sacrifice, else would I give it: thou delightest not in burnt offering.”

Psalm 51:17, “The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, thou wilt not despise.”

Amos 5:21, “I hate, I despise your feast days, and I will not smell in your solemn assemblies.”

Amos 5:22, “Though ye offer me burnt offerings and your meat offerings, I will not accept them: neither will I regard the peace offerings of your fat beasts.”

Amos 5:23, “Take thou away from me the noise of thy songs, for I will not hear the melody of thy viols.”

Amos 5:24, “But let judgment run down as waters, and righteousness as a mighty stream.”

The prophets consistently condemn worship that is not joined with righteousness. Judah’s hands were lifted in prayer, but they were also full of blood. The posture of prayer could not hide the practice of violence and injustice. Their prayers may have sounded eloquent, emotional, and sincere to men, but God saw the blood on their hands.

This is especially important for understanding biblical worship. God is not manipulated by religious performance. He is not impressed by noise, crowds, buildings, ceremonies, or polished words when the worshiper refuses repentance. The LORD demands truth in the inward parts.

Psalm 66:18, “If I regard iniquity in my heart, the Lord will not hear me:”

Proverbs 28:9, “He that turneth away his ear from hearing the law, even his prayer shall be abomination.”

Isaiah 1 therefore exposes one of the most dangerous forms of sin, religious rebellion. Open rebellion is obvious. Religious rebellion is more deceptive because the sinner keeps enough outward activity to feel safe while his heart remains far from God. Judah still had the temple, but they had lost the fear of the LORD.

Isaiah 1:16 through Isaiah 1:20

The LORD Offers a Cure

Isaiah 1:16, “Wash you, make you clean, put away the evil of your doings from before mine eyes, cease to do evil,”

Isaiah 1:17, “Learn to do well, seek judgment, relieve the oppressed, judge the fatherless, plead for the widow.”

Isaiah 1:18, “Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow, though they be red like crimson, they shall be as wool.”

Isaiah 1:19, “If ye be willing and obedient, ye shall eat the good of the land:”

Isaiah 1:20, “But if ye refuse and rebel, ye shall be devoured with the sword: for the mouth of the LORD hath spoken it.”

The LORD does not merely condemn Judah. He commands repentance and offers cleansing. “Wash you, make you clean” is not a denial that only God can cleanse sin. Rather, it is a command for Judah to repent, forsake evil, and stop pretending that ceremony can substitute for obedience. They must put away evil “from before mine eyes.” God sees what men hide. Sin must be dealt with in the presence of God, not merely managed before public opinion.

The command “cease to do evil” is followed by “learn to do well.” Repentance is not merely stopping certain acts. It includes turning toward righteousness. Judah must seek judgment, relieve the oppressed, judge the fatherless, and plead for the widow. In Scripture, true righteousness always works itself out in how people treat the weak, vulnerable, and defenseless.

The fatherless and widow were especially vulnerable in ancient society. They often lacked protection, economic strength, and legal influence. Corrupt leaders could exploit them easily. God measures the moral health of a society in part by how it treats those who cannot repay favors or defend themselves.

Exodus 22:22, “Ye shall not afflict any widow, or fatherless child.”

Exodus 22:23, “If thou afflict them in any wise, and they cry at all unto me, I will surely hear their cry,”

Exodus 22:24, “And my wrath shall wax hot, and I will kill you with the sword, and your wives shall be widows, and your children fatherless.”

James 1:27, “Pure religion and undefiled before God and the Father is this, To visit the fatherless and widows in their affliction, and to keep himself unspotted from the world.”

The apostle John later teaches the same principle in New Testament language. A man cannot claim love for God while living in hatred toward his brother.

1 John 4:20, “If a man say, I love God, and hateth his brother, he is a liar, for he that loveth not his brother whom he hath seen, how can he love God whom he hath not seen?”

Isaiah 1:18 is one of the great invitations of Scripture. “Come now, and let us reason together.” God does not call Judah to irrational submission. He calls them to see reality as it is. Sin is unreasonable. Rebellion against infinite wisdom is madness. To resist the God who made man, sustains man, commands man, and offers mercy to man is spiritual insanity. True reason leads to repentance and worship.

The promise is staggering. “Though your sins be as scarlet, they shall be as white as snow.” Scarlet and crimson picture deep, obvious, blood colored stain. Judah’s guilt was not minor. God does not pretend their sin is small. He does not say their sins are pale pink. He says they are scarlet and crimson. Yet He promises that they shall be white as snow and wool.

This is grace. God does not merely reduce guilt. He cleanses. God does not merely improve the sinner’s public image. He removes the stain. The full basis of this cleansing is later revealed in the substitutionary work of the Servant of the LORD and ultimately fulfilled in Jesus Christ.

Isaiah 53:5, “But he was wounded for our transgressions, he was bruised for our iniquities, the chastisement of our peace was upon him, and with his stripes we are healed.”

Isaiah 53:6, “All we like sheep have gone astray, we have turned every one to his own way, and the LORD hath laid on him the iniquity of us all.”

1 Peter 2:24, “Who his own self bare our sins in his own body on the tree, that we, being dead to sins, should live unto righteousness: by whose stripes ye were healed.”

The believer is cleansed because Christ bore the stain. The guilt of sin is not ignored. It is judged in the Substitute. This is why Isaiah’s invitation is not sentimental. God’s forgiveness is just because Christ satisfies divine justice.

Verse 19 and verse 20 present a covenant choice. If Judah is willing and obedient, they will eat the good of the land. If they refuse and rebel, they will be devoured by the sword. The issue is not whether Judah can earn salvation by works. The issue is whether they will respond to God with repentant faith that produces obedience, or continue in stubborn rebellion that brings judgment.

“For the mouth of the LORD hath spoken it.” This closes the invitation with absolute authority. The matter is not up for negotiation. God has spoken. Judah must either repent and live under blessing, or rebel and face judgment.

Isaiah 1:21 through Isaiah 1:23

The Unjust Leaders of Judah

Isaiah 1:21, “How is the faithful city become an harlot, it was full of judgment, righteousness lodged in it, but now murderers.”

Isaiah 1:22, “Thy silver is become dross, thy wine mixed with water:”

Isaiah 1:23, “Thy princes are rebellious, and companions of thieves: every one loveth gifts, and followeth after rewards, they judge not the fatherless, neither doth the cause of the widow come unto them.”

Isaiah now laments the corruption of Jerusalem. The “faithful city” has become a harlot. Jerusalem had been the city of David, the place of the temple, the center of worship, and the place associated with God’s covenant promises. Yet now she is spiritually unfaithful. The image of harlotry points to covenant betrayal. Judah had forsaken her rightful devotion to the LORD and pursued idols, corrupt alliances, injustice, and moral compromise.

The city had once been full of judgment, and righteousness had lodged in it. That means justice had once found a home there. But now murderers occupy the city. This is a devastating reversal. The place that should have reflected the character of God had become a center of violence and corruption.

“Thy silver is become dross” pictures moral and social decay. Silver should be valuable and pure, but dross is worthless impurity. “Thy wine mixed with water” pictures fraud, dilution, and corruption. What should have been strong and true had become weakened and dishonest. The city’s corruption affected religious life, political life, economic life, and legal life.

The princes were rebellious and companions of thieves. These were not merely incompetent leaders. They were morally corrupt leaders. They loved gifts and followed after rewards, meaning they were driven by bribes and personal advantage. Justice was for sale. The fatherless and widows were ignored because they had no money or influence to buy favor.

This reveals what God expects from civil authority. Leaders are supposed to restrain evil, maintain justice, protect the innocent, punish wrongdoing, and defend the vulnerable. When rulers become companions of thieves, society rots from the top down.

Proverbs 29:2, “When the righteous are in authority, the people rejoice: but when the wicked beareth rule, the people mourn.”

Proverbs 29:4, “The king by judgment establisheth the land: but he that receiveth gifts overthroweth it.”

Romans 13:3, “For rulers are not a terror to good works, but to the evil. Wilt thou then not be afraid of the power, do that which is good, and thou shalt have praise of the same:”

Romans 13:4, “For he is the minister of God to thee for good. But if thou do that which is evil, be afraid, for he beareth not the sword in vain, for he is the minister of God, a revenger to execute wrath upon him that doeth evil.”

Civil government is accountable to God. Isaiah does not allow rulers to hide behind office, power, or political necessity. The LORD judges corrupt leadership. When justice is perverted, bribes are loved, thieves are protected, and the weak are ignored, the nation stands under divine indictment.

Isaiah 1:24 through Isaiah 1:31

The LORD’s Plan of Redemption with Justice

Isaiah 1:24, “Therefore saith the Lord, the LORD of hosts, the mighty One of Israel, Ah, I will ease me of mine adversaries, and avenge me of mine enemies:”

Isaiah 1:25, “And I will turn my hand upon thee, and purely purge away thy dross, and take away all thy tin:”

Isaiah 1:26, “And I will restore thy judges as at the first, and thy counsellors as at the beginning: afterward thou shalt be called, The city of righteousness, the faithful city.”

Isaiah 1:27, “Zion shall be redeemed with judgment, and her converts with righteousness.”

Isaiah 1:28, “And the destruction of the transgressors and of the sinners shall be together, and they that forsake the LORD shall be consumed.”

Isaiah 1:29, “For they shall be ashamed of the oaks which ye have desired, and ye shall be confounded for the gardens that ye have chosen.”

Isaiah 1:30, “For ye shall be as an oak whose leaf fadeth, and as a garden that hath no water.”

Isaiah 1:31, “And the strong shall be as tow, and the maker of it as a spark, and they shall both burn together, and none shall quench them.”

The final section begins with a solemn declaration of divine authority. God identifies Himself as “the Lord, the LORD of hosts, the mighty One of Israel.” These titles emphasize His sovereignty, military power, covenant authority, and irresistible strength. “The LORD of hosts” presents Him as commander of the heavenly armies. Judah’s leaders may think they are powerful, but they are nothing before the Mighty One of Israel.

The LORD says, “I will ease me of mine adversaries, and avenge me of mine enemies.” The shocking part is that He is speaking about His own covenant people. They had positioned themselves as adversaries by their rebellion. To be part of the visible covenant community did not protect them while they lived as enemies of God. Religious identity without repentance is no refuge from judgment.

Yet the LORD’s judgment has a refining purpose. “I will turn my hand upon thee, and purely purge away thy dross, and take away all thy tin.” Dross and tin picture impurity mixed with metal. God will purify Judah by judgment. His hand against them is not merely destructive. It is refining. The heat of judgment will expose and remove corruption.

This is one of the great tensions in Isaiah. God judges, but He also restores. God wounds, but He heals. God purges, but He does not abandon His covenant promises. He says, “I will restore thy judges as at the first, and thy counsellors as at the beginning.” The end goal is restoration, not annihilation. Jerusalem will again be called “The city of righteousness, the faithful city.”

This promise reaches beyond Isaiah’s immediate day. Jerusalem was not permanently transformed into a city of righteousness after Isaiah 1. The full restoration of Zion awaits the future kingdom reign of Messiah, when righteousness will characterize Jerusalem and the nations will be taught the ways of the LORD.

Isaiah 11:4, “But with righteousness shall he judge the poor, and reprove with equity for the meek of the earth, and he shall smite the earth with the rod of his mouth, and with the breath of his lips shall he slay the wicked.”

Isaiah 11:5, “And righteousness shall be the girdle of his loins, and faithfulness the girdle of his reins.”

From a literal, premillennial perspective, Isaiah’s promise of Zion’s restoration should not be flattened into a vague symbol. God will fulfill His promises to Israel and Jerusalem through Messiah’s righteous reign. The church shares in the salvation blessings of the New Covenant through Christ, but God has not canceled His promises concerning Israel’s future restoration.

“Zion shall be redeemed with judgment, and her converts with righteousness.” Redemption and justice are not enemies. God does not redeem by compromising righteousness. He redeems in a way that upholds judgment and righteousness. This points forward to the cross, where God is both just and the justifier of the believer.

Romans 3:24, “Being justified freely by his grace through the redemption that is in Christ Jesus:”

Romans 3:25, “Whom God hath set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God,”

Romans 3:26, “To declare, I say, at this time his righteousness: that he might be just, and the justifier of him which believeth in Jesus.”

At the same time, transgressors and sinners will be destroyed together. Those who forsake the LORD will be consumed. Isaiah does not teach universalism. He does not say all will be saved regardless of repentance. There is a redeemed Zion, and there are consumed rebels. The invitation to cleansing is real, but so is the warning of judgment.

The reference to oaks and gardens points to idolatrous worship. Trees and gardens were associated with pagan fertility cults and false worship. Judah had desired these places and chosen them over the LORD. But the very objects of their desire would become a source of shame. Sin promises delight, but it ends in disgrace.

They will become like an oak whose leaf fades and a garden with no water. This is a picture of spiritual dryness and death. Idolatry cannot give life. False worship cannot nourish the soul. A people who abandon the fountain of living waters will become dry, brittle, and ready for judgment.

Jeremiah 2:13, “For my people have committed two evils, they have forsaken me the fountain of living waters, and hewed them out cisterns, broken cisterns, that can hold no water.”

The final image is fire. “The strong shall be as tow, and the maker of it as a spark.” Tow refers to dry, combustible fibers. The strong man and his work will burn together, and none shall quench them. Human strength cannot withstand divine judgment. The idols men make, the systems they build, the sins they love, and the pride they trust will all burn when the LORD acts.

Isaiah 1 therefore closes with both hope and terror. Zion will be redeemed with judgment and righteousness. But rebels will be consumed. The faithful city will be restored, but sinners who forsake the LORD will face destruction. God’s mercy is real, but it is never permission to continue in rebellion.

Theological Summary of Isaiah 1

Isaiah 1 reveals God as holy, covenant keeping, just, merciful, and sovereign. He is not indifferent to sin. He sees national corruption, religious hypocrisy, injustice, idolatry, and leadership failure. He calls sin what it is. Judah is not allowed to hide behind heritage, temple worship, sacrifice, or national identity. God exposes the heart.

The chapter also reveals man’s sinful condition. Judah is rebellious like an ungrateful child, irrational like a beast that refuses to know its master, diseased from head to foot, hypocritical in worship, corrupt in leadership, unjust toward the weak, and idolatrous in desire. This is not merely ancient history. It is a mirror of fallen man. Man’s problem is not merely ignorance, poverty, bad systems, or lack of opportunity. Man’s deepest problem is sin against God.

At the same time, Isaiah 1 reveals the mercy of God. The LORD invites sinners to reason with Him. He offers cleansing from scarlet sin. He preserves a remnant. He promises restoration. He declares that Zion shall be redeemed. The God who judges also saves.

The chapter points ultimately to Christ. The cleansing offered in Isaiah 1:18 is grounded in the atoning work later revealed in Isaiah 53 and fulfilled at Calvary. God can make scarlet sins white because the sinless Substitute bears the guilt of sinners. Redemption is not cheap mercy. It is justice satisfied through substitution.

Isaiah 1 also establishes a pattern for the rest of the book. Sin will be exposed, judgment will be announced, false confidence will be shattered, but God will preserve a remnant, provide salvation, and fulfill His kingdom promises through the Messiah.

Clayton Taylor https://taylorbiblestudy.com