Isaiah 51
Isaiah 51 — Commentary and Meaning
The short answer
Isaiah 51 speaks to a people who feel small, defeated, and forgotten — the exiles of Judah, far from home and unsure God can do anything about it. The chapter opens with an invitation to remember: "look to the rock from which you were cut," and specifically, "look to Sarah who bore you" (51:2). The point is not nostalgia. Sarah was one barren woman, and from her God built a whole people. If the nation began as a miracle, a shrunken remnant is not beyond another one. Memory becomes the ground of hope.
The second half of the chapter turns to a harder image. Jerusalem is pictured staggering like someone who has drunk too much — but the drink is not ordinary wine. She has drained "the cup of his wrath" (51:17), the prophets' vivid picture of what happens when God finally confronts human violence and oppression. Judgment here is not random cruelty; it is the consequence of wickedness poured out like sour wine, leaving the drinker helpless.
But the chapter does not end with the cup in Jerusalem's hand. God announces a reversal: "I have taken out of your hand the cup of staggering" (51:22). The judgment is finished, and the cup passes instead to those who trampled her. The God who pleads the cause of his people steps in, and comfort — a word that echoes through this whole section of Isaiah — becomes concrete.
Read as a whole, Isaiah 51 holds these two movements together. Looking back to Sarah proves that God works miracles from impossible beginnings; looking forward, the removed cup proves that judgment is not God's last word. For Christian readers, the cup image resurfaces on the lips of Jesus, which is why this chapter has long been read as background to the Gospels.
What scholars say
N. T. Wright's excerpt answers what the prophets meant by the "cup of YHWH's wrath" in Isaiah 51 — God's grief over the world's wickedness turned into wine the violent must drink — and notes that Jesus' own words about his calling draw on this image. John Goldingay's excerpt takes up the chapter's other pole, explaining why God points a diminished Judah back to Sarah: the barren woman who finally laughed shows that a God who did miracles with her can do them with her descendants.
“Jesus’ curious answer to them opens a very different window: on the biblical roots of the calling which he was following. The Old Testament prophets speak darkly about the ‘cup of YHWH ’s wrath’ (Isaiah 51.17, 22; Jeremiah 25.15–29; and several other passages). These passages talk of what happens when the one God, grieving over the awful wickedness of the world, steps in at last to give the violent and bloodthirsty, the arrogant and oppressors, the reward for their ways and deeds. It’s as though God’s holy anger against such people is turned into wine: dark, sour wine which will make them drunk and helpless. They will be forced to ‘drink the cup’, to drain to the dregs the wrath of the God who loves and vindicates the weak and helpless.”
“Sarah deserves our remembering her. She is the great foremother of Jews and Christians (Muslim attitudes to her are naturally more equivocal because of the way she treated Hagar and Ishmael). She is this spunky woman who lived for years with the aching sadness of her childlessness, whom her husband knew he could not mess with (though he tried hard), and who was no pushover even for God. But she was a woman who eventually saw God’s promises fulfilled and was able to laugh. “Look to Sarah who bore you,” God later urges the people of Judah when they are only a shadow of their former self (Isaiah 51:2). If God could do miracles with Sarah, he can do miracles with her descendants.”
What it means for you
Isaiah 51 is written for people who feel like a shadow of what they once were — and that feeling is not unique to ancient exiles. The chapter's first move is worth imitating: when the future looks impossible, look back. Recall the times something came from nothing in your own story, or in the long story of faith you belong to. A God who began a nation with a barren woman is not limited by present shrinkage.
The second move is just as practical: the cup does not stay in your hand forever. Whatever season of consequence or grief you are walking through, this chapter insists that God's judgment has an end and his comfort has a beginning.
Isaiah 51 in context
Isaiah 51 sits in the middle of Isaiah 40–55, the section addressed to Judah's exiles in Babylon, where the keynote sounded in chapter 40 — "Comfort, comfort my people" — is worked out. It follows the servant's obedient suffering in chapter 50 and leads into chapter 52's summons for Zion to wake and dress in strength, which itself opens onto the great servant passage of Isaiah 53. Chapter 51 supplies the hinge: repeated calls to listen and awake, a look back to Abraham and Sarah, and the decisive removal of the cup of wrath.