The Incomparable God: Isaiah 40
Chapter 40 is a theological symphony. After the opening announcement of comfort, a voice calls for a highway to be prepared in the wilderness:
"A voice cries: 'In the wilderness prepare the way of the LORD; make straight in the desert a highway for our God. Every valley shall be lifted up, and every mountain and hill be made low; the uneven ground shall become level, and the rough places a plain. And the glory of the LORD shall be revealed, and all flesh shall see it together, for the mouth of the LORD has spoken.'"
— Isaiah 40:3–5 (ESV)
The imagery reverses the exodus pattern. Instead of God leading His people through the wilderness, God Himself is coming through the wilderness to His people. The landscape is reshaped to accommodate His arrival. J. Alec Motyer writes that the highway is not a road Israel builds toward God but a road God opens toward Israel. The initiative, as always in Isaiah, belongs entirely to God.
John the Baptist applies this passage directly to himself in all four Gospels (Matthew 3:3, Mark 1:3, Luke 3:4–6, John 1:23). He is the voice crying in the wilderness. He is the one preparing the way of the LORD. Seven hundred years after Isaiah wrote these words, a man appears in the Judean desert eating locusts and honey, and he says: this is that. The road Isaiah described — God coming to His people through the wilderness — is being laid down right now, and the one coming is Jesus.
A second voice speaks of the fragility of human existence: "All flesh is grass, and all its beauty is like the flower of the field. The grass withers, the flower fades when the breath of the LORD blows on it; surely the people are grass" — Isaiah 40:6–7 (ESV). But against this impermanence stands something unshakable: "The grass withers, the flower fades, but the word of our God will stand forever" — Isaiah 40:8 (ESV).
The chapter then builds to one of the most expansive descriptions of God's power in all of Scripture. Who has measured the waters in the hollow of his hand? Who has marked off the heavens with a span? Nations are like a drop from a bucket; the coastlands are like fine dust. Lebanon does not have enough wood to fuel a fire worthy of God, nor enough animals for a burnt offering. All the nations together are as nothing before Him.
"Have you not known? Have you not heard? The LORD is the everlasting God, the Creator of the ends of the earth. He does not faint or grow weary; his understanding is unsearchable. He gives power to the faint, and to him who has no might he increases strength."
— Isaiah 40:28–29 (ESV)
And the promise to the weary:
"But they who wait for the LORD shall renew their strength; they shall mount up with wings like eagles; they shall run and not be weary; they shall walk and not faint."
— Isaiah 40:31 (ESV)
John Oswalt observes that this chapter functions as a theological foundation for everything that follows. Before God announces what He will do, He establishes who He is. The exiles need to know that the God who speaks to them is not a defeated deity retreating from Babylonian power — He is the Creator who holds oceans in His palm and calls the stars by name. We find ourselves returning to Isaiah 40 whenever the weight of something becomes too much. Not because it resolves the weight, but because it reorients you to who is carrying it.
The Trial Against Idols: Isaiah 41–48
A distinctive literary form dominates chapters 41–48: the trial speech. God summons the nations and their gods to court. The challenge is simple and devastating: Can the gods of the nations explain the past or predict the future?
"Set forth your case, says the LORD; bring your proofs, says the King of Jacob. Let them bring them, and tell us what is to happen. Tell us the former things, what they are, that we may consider them, that we may know their outcome; or declare to us the things to come."
— Isaiah 41:21–22 (ESV)
The idols cannot speak, cannot act, cannot predict. The repeated verdict is withering: "Behold, you are nothing, and your work is less than nothing" — Isaiah 41:24 (ESV). Brevard Childs notes that these trial speeches are not merely intellectual arguments against polytheism; they are pastoral addresses to exiles who were surrounded by the magnificent religious architecture of Babylon and tempted to conclude that Marduk was more powerful than the LORD. Isaiah insists that the question is not which god has the bigger temple but which God actually governs history.
The satire against idol-making in chapters 44 and 46 is particularly sharp. A craftsman cuts down a tree. With half the wood he builds a fire and warms himself and bakes bread. With the other half he makes a god and bows down to it: "He prays to it and says, 'Deliver me, for you are my god!'" — Isaiah 44:17 (ESV). The absurdity is allowed to speak for itself. The same wood that fuels a cooking fire is worshiped as a deity.
Into this context, God makes one of the most startling announcements in the Old Testament — He names a pagan king as His chosen instrument:
"Thus says the LORD to his anointed, to Cyrus, whose right hand I have grasped, to subdue nations before him and to loose the belts of kings, to open doors before him that gates may not be closed."
— Isaiah 45:1 (ESV)
Cyrus is called God's "anointed" — the Hebrew word mashiach, from which "Messiah" derives. A Persian king who does not know the LORD is given the covenant title reserved for Israel's kings. The purpose is stated explicitly: "For the sake of my servant Jacob, and Israel my chosen, I called you by your name, I name you, though you do not know me" — Isaiah 45:4 (ESV). John Oswalt writes that the naming of Cyrus demonstrates the breadth of God's sovereignty: He does not need His instruments to be aware of Him in order to use them. The God who holds the oceans in His hand can redirect the policies of empires without their knowledge or consent.
Cyrus's decree to release the exiles (fulfilled historically around 539 BC) is interpreted not as Persian generosity but as the LORD's doing. "I have stirred him up in righteousness, and I will make all his ways level; he shall build my city and set my exiles free, not for price or reward" — Isaiah 45:13 (ESV).
Woven through chapters 42–53 are four passages that scholars since Bernhard Duhm's 1892 commentary have identified as the "Servant Songs" — distinct poems that describe a figure whose identity and mission become progressively clearer and more costly. The servant is introduced in 42:1–9, given voice in 49:1–7, shown suffering in 50:4–9, and brought to a climax of substitutionary death and exaltation in 52:13–53:12.
The first song introduces the servant with tenderness:
"Behold my servant, whom I uphold, my chosen, in whom my soul delights; I have put my Spirit upon him; he will bring forth justice to the nations. He will not cry aloud or lift up his voice, or make it heard in the street; a bruised reed he will not break, and a faintly burning wick he will not quench; he will faithfully bring forth justice."
— Isaiah 42:1–3 (ESV)
This servant operates not through force but through gentle persistence. The bruised reed and faintly burning wick — images of the fragile and nearly extinguished — are not crushed but tended. J. Alec Motyer argues that the servant's method is as important as his mission: the justice he brings is not imposed through violence but established through patient faithfulness. "He will not grow faint or be discouraged till he has established justice in the earth; and the coastlands wait for his teaching" — Isaiah 42:4 (ESV).
The second song (49:1–7) gives the servant his own voice. He has been called from the womb, his mouth made like a sharp sword, hidden in the shadow of God's hand. His mission extends beyond Israel: "It is too light a thing that you should be my servant to raise up the tribes of Jacob and to bring back the preserved of Israel; I will make you as a light for the nations, that my salvation may reach to the end of the earth" — Isaiah 49:6 (ESV). The scope of the servant's work is universal.
The third song (50:4–9) describes the servant's suffering as voluntary and redemptive. He is given the tongue of a teacher and the ear of a disciple. He does not turn back from those who strike him:
"I gave my back to those who strike, and my cheeks to those who pull out the beard; I hid not my face from disgrace and spitting."
— Isaiah 50:6 (ESV)
And his confidence is not in his own strength but in God: "The Lord GOD helps me; therefore I have not been disgraced; therefore I have set my face like a flint, and I know that I shall not be put to shame" — Isaiah 50:7 (ESV).
The Suffering Servant: Isaiah 52:13–53:12
The fourth and final Servant Song is the theological climax of the entire book of Isaiah — and one of the most consequential passages in the Old Testament. It is the most quoted passage from the Old Testament in the entire New Testament. Philip explains it to the Ethiopian eunuch in Acts 8 as he reads it on the road from Jerusalem to Gaza. Matthew, Mark, Luke, John, Paul — all reach back to Isaiah 53 when they try to explain what happened on the cross.
The song opens with God's own announcement:
"Behold, my servant shall act wisely; he shall be high and lifted up, and shall be exalted."
— Isaiah 52:13 (ESV)
The language "high and lifted up" echoes the description of God Himself on the throne in Isaiah 6:1. The servant will be exalted to the highest place. But the path to exaltation runs through something appalling:
"As many were astonished at you — his appearance was so marred, beyond human semblance, and his form beyond that of the children of mankind."
— Isaiah 52:14 (ESV)
Nations and kings will be silenced by what they see — something never before told, never before heard. Then chapter 53 opens with the voice of those who witness the servant's suffering and struggle to comprehend it:
"Who has believed what he has heard from us? And to whom has the arm of the LORD been revealed? For he grew up before him like a young plant, and like a root out of dry ground; he had no form or majesty that we should look at him, and no beauty that we should desire him."
— Isaiah 53:1–2 (ESV)
The servant is despised and rejected, a man of sorrows, acquainted with grief. People hide their faces from him. And then the theological interpretation breaks through:
"Surely he has borne our griefs and carried our sorrows; yet we esteemed him stricken, smitten by God, and afflicted. But he was pierced for our transgressions; he was crushed for our iniquities; upon him was the chastisement that brought us peace, and with his wounds we are healed."
— Isaiah 53:4–5 (ESV)
Brevard Childs writes that the theology of substitution in these verses is among the clearest in the Old Testament. The servant does not suffer for his own sins — he suffers for the sins of others. The language is emphatic and repetitive: our griefs, our sorrows, our transgressions, our iniquities. The "we" who speak have finally understood what they are seeing: the servant's affliction is not punishment for his own failure but the bearing of consequences that belonged to others.
"All we like sheep have gone astray; we have turned — every one — to his own way; and the LORD has laid on him the iniquity of us all."
— Isaiah 53:6 (ESV)
The imagery of sheep going astray captures both the universality of sin (every one) and the deliberateness of divine action (the LORD has laid on him). John Oswalt writes that this verse is the theological center of the entire song: the servant's suffering is not an accident, not a tragedy, not a failure of God's plan — it is the plan. The LORD Himself directs the weight of human iniquity onto the servant.
The servant goes silently to his death: "He was oppressed, and he was afflicted, yet he opened not his mouth; like a lamb that is led to the slaughter, and like a sheep that before its shearers is silent, so he opened not his mouth" — Isaiah 53:7 (ESV). He is buried with the wicked and with a rich man in his death, "although he had done no violence, and there was no deceit in his mouth" — Isaiah 53:9 (ESV).
But the song does not end in death. It ends in vindication:
"Yet it was the will of the LORD to crush him; he has put him to grief; when his soul makes an offering for guilt, he shall see his offspring; he shall prolong his days; the will of the LORD shall prosper in his hand."
— Isaiah 53:10 (ESV)
The servant's death is described as an asham — a guilt offering, the same category of sacrifice described in Leviticus 5 that addresses concrete wrongs and requires restitution. But after the offering, the servant sees offspring and prolongs his days. Death is not the end.
"Out of the anguish of his soul he shall see and be satisfied; by his knowledge shall the righteous one, my servant, make many to be accounted righteous, and he shall bear their iniquities."
— Isaiah 53:11 (ESV)
J. Alec Motyer argues that these final verses establish the servant as both priest and sacrifice — the one who offers and the one who is offered. The many are "accounted righteous" not through their own achievement but through the servant's bearing of their iniquities. The theological architecture of justification — being counted righteous through another's work — is laid here in its Old Testament foundation.
We keep coming back to Isaiah 53 because it is written in the past tense about something that had not yet happened. The prophet is describing, in the sixth century BC, what looks exactly like the crucifixion — the silence before accusers, the wounds, the burial with the rich, the guilt offering, the seeing of offspring after death. When the Ethiopian eunuch asks Philip "About whom does the prophet say this?" it is the right question. And the answer Philip gives is the answer the whole passage has been pointing toward since the first servant song was introduced.
The Everlasting Covenant and the Invitation
The aftermath of the servant's work is celebration. Chapter 54 opens with singing: "Sing, O barren one, who did not bear; break forth into singing and cry aloud, you who have not been in labor!" — Isaiah 54:1 (ESV). The barren woman — an image of exiled, depleted Israel — will have more children than she can contain. God promises an everlasting covenant of peace: "For the mountains may depart and the hills be removed, but my steadfast love shall not depart from you, and my covenant of peace shall not be removed" — Isaiah 54:10 (ESV).
Chapter 55 closes this section with an invitation of extraordinary generosity:
"Come, everyone who thirsts, come to the waters; and he who has no money, come, buy and eat! Come, buy wine and milk without money and without price."
— Isaiah 55:1 (ESV)
The invitation is universal, unconditional, and free. No qualification is required except thirst. The word that goes out from God's mouth "shall not return to me empty, but it shall accomplish that which I purpose, and shall succeed in the thing for which I sent it" — Isaiah 55:11 (ESV). The section that began with comfort ends with confidence: God's word will accomplish what it promises. The servant's suffering will not be in vain.
Last updated: March 3, 2026.
Scripture quotations are from the ESV® Bible (The Holy Bible, English Standard Version®), © 2001 by Crossway, a publishing ministry of Good News Publishers.