Commentary on Isaiah 43

Isaiah 43 stands as one of the most tender and triumphant chapters in the Old Testament. In it, God speaks directly to His exiled people through the prophet, declaring that He has redeemed them, called them by name, and will be with them through fire and flood. The chapter pivots from comfort to courtroom, as God presents Himself as the only Savior and calls the nations as witnesses. It is a sustained meditation on divine love, sovereign power, and the radical new thing God is about to do — a highway in the wilderness and rivers in the desert. The chapter culminates in a painful confession: Israel has wearied God not with sacrifices, but with their sins. Yet even this indictment is wrapped in the promise of blotted-out transgressions.

Historical context

Isaiah 43 belongs to the section of the book often called "Second Isaiah" (chapters 40-55), addressed to the Judean exiles in Babylon around 540 BC. The people have been in captivity for nearly fifty years. Their temple lies in ruins, their king is gone, and their national identity is crumbling. Into this despair, the prophet speaks words of comfort and hope, announcing that Yahweh — not the Babylonian gods Marduk or Bel — is the Lord of history who will soon act to deliver them.

The chapter draws heavily on the exodus tradition. The language of "passing through waters" and "walking through fire" echoes Israel's foundational redemption from Egypt. But now God promises a new exodus, greater than the first, that will astonish the nations. The courtroom imagery (v. 8-13) reflects the ancient Near Eastern practice where gods were judged by their ability to predict and control events. Yahweh calls the nations to present their case, then demonstrates His sole deity by declaring the future before it happens — specifically, the rise of Cyrus the Persian (named in Isa 44:28-45:1) who will conquer Babylon and release the exiles.

Verse by verse

• 1:

  "But now thus says the LORD, he who created you, O Jacob, he who formed you, O Israel." The phrase "but now" marks a dramatic pivot from the judgment of chapter 42. God grounds His comfort in His identity as Creator and Redeemer. The verbs created (bara) and formed (yatsar) echo Genesis — the same God who made the cosmos has personally fashioned Israel. The assurance "Fear not" is the chapter's keynote, repeated in v. 5. Being called by name implies intimate, covenantal knowledge, not mere acquaintance.

• 2:

  "When you pass through the waters, I will be with you." The promise is not if trials come, but when. God does not promise a trouble-free life; He promises His presence in the trouble. The imagery of waters and fire evokes both the Red Sea crossing and the fiery furnace of Daniel's friends. The verbs are emphatic: the waters will not overwhelm (shataph — to flood over), and the flame will not consume (ba'ar — to burn up). Presence, not removal, is the heart of the covenant.

• 3:

  "For I am the LORD your God, the Holy One of Israel, your Savior." This triple self-identification piles up covenantal titles. The Holy One of Israel is Isaiah's favorite name for God (25 times in the book), combining transcendence with relationship. The shocking phrase "I give Egypt as your ransom" uses the language of the marketplace: God will pay a price to redeem His people. Historically, this may refer to Cyrus's conquest of Egypt (525 BC), but theologically it declares that no cost is too high for God's chosen.

• 4:

  "Because you are precious in my eyes, and honored, and I love you." The ground of redemption is not Israel's merit but God's love. The Hebrew word for love here is ahav, the same word used for a husband's love for his wife. "I give men in return for you" — the nations become the currency of Israel's redemption. This is not ethnic favoritism but missional election: Israel is chosen to be a light to the nations, and the nations themselves will eventually be gathered in (v. 6-7).

• 8:

  "Bring out the people who are blind, yet have eyes." The courtroom scene begins. God summons the nations to present their case, but first He indicts His own people. Israel is spiritually blind and deaf — they have seen God's works but failed to understand. This is a devastating reversal: the people who should be God's witnesses are themselves in need of healing. The blindness is not physical but spiritual, a theme Jesus will later take up in John 9.

• 11:

  "I, I am the LORD, and besides me there is no savior." The double "I" (anoki anoki) is emphatic — God alone is Savior. This is the heart of Isaiah's monotheism. In a world where every nation had its patron deity, Yahweh declares that He alone can deliver. The word "savior" (moshia) is a legal term from the courtroom: one who delivers the innocent from false accusation. It is also the root of the name Joshua/Jesus — "Yahweh saves."

• 18:

  "Remember not the former things, nor consider the things of old." This is not a command to forget the exodus, but to stop living in the past. The old exodus was glorious, but God is about to do something even greater. The "new thing" (chadashah) is the return from Babylon, but it also points forward to the ultimate new creation in Christ (2 Cor 5:17, Rev 21:5). The imperative is striking: God commands His people to look up and expect the unexpected.

• 19:

  "Behold, I am doing a new thing; now it springs forth, do you not perceive it?" The present tense is urgent — "it springs forth" (tismach) like a plant breaking through soil. The new thing is already in motion before the exiles can see it. God will make a "way in the wilderness" and "rivers in the desert." The return journey from Babylon to Jerusalem crossed 500 miles of arid desert; God promises supernatural provision. The language is deliberately exodus-shaped but surpasses it.

• 22:

  "Yet you did not call upon me, O Jacob." The tone shifts sharply from comfort to confrontation. Despite God's lavish promises, Israel has not responded with worship. The verb "called upon" (qara) is the same as in v. 1 ("I have called you by name") — God called, but Israel did not call back. The people have wearied God not with their sacrifices (they offered none in exile) but with their sins. The indictment is devastating: they brought God nothing but their rebellion.

• 25:

  "I, I am he who blots out your transgressions for my own sake." The double "I" returns, emphatic and personal. The verb "blot out" (machah) means to wipe clean, as one erases a debt record or washes a stain. The basis of forgiveness is not Israel's repentance but God's own character — "for my own sake." This is the gospel before the gospel: God's grace is rooted in God's glory. The final line, "I will not remember your sins," is not divine amnesia but a deliberate choice not to hold sins against the sinner.

• 28:

  "So I will profane the princes of the sanctuary." The chapter ends on a somber note. Because Israel refused to serve God as priests, they will be handed over to "destruction" (cherem — the ban of holy war). The princes of the sanctuary — the religious leaders — will be profaned, stripped of their holy status. Yet even this judgment serves the larger purpose: it clears the way for the new thing God is about to do. The chapter closes not with a period but with a comma, waiting for the Servant who will come in chapter 53.

Key themes

• Divine redemption and new exodus
• God's exclusive sovereignty as Savior
• Covenant love and personal calling
• Spiritual blindness and divine indictment
• Grace that blots out transgression

Application

Isaiah 43 confronts us with a God who does not wait for us to get our act together before He acts. The chapter opens with comfort for people who have done nothing to deserve it — exiled, faithless, spiritually blind. God's love is not reactive but initiative-taking. He calls us by name before we call on Him. He promises to be with us in the fire before we have the faith to walk through it.

This reshapes how we face suffering. The promise is not that we will escape trials but that we will not be consumed by them. The same God who made a highway in the wilderness can make a way through your present desert. And when we fail — when we weary God with our sins and half-hearted worship — He does not turn away. He blots out our transgressions, not because we deserve it, but for His own sake. That is the only ground strong enough for hope. The new thing God is doing may be invisible to you right now, but it is already springing forth.

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