The plot. Isaac is old and blind, and thinks himself near death (he will in fact live some forty years more). He wants to bless Esau, and the trigger is small and human: the savory food (mat'ammim, a favorite dish) he loves. Rebekah, who has never forgotten the oracle that "the elder will serve the younger" (25:23), overhears — and moves. She will cook the disguise from two young goats and clothe Jacob in Esau's garments and their skins. Jacob's objection is not moral but practical: "Esau my brother is a hairy man (sa'ir), and I am a smooth man (chalaq) — if my father feels me, I would seem in his eyes a mocker" (metateia, one caught making a fool of him) and earn a curse. Rebekah takes even that on herself: "Your curse be on me, my son." Nowhere does the narrator pause to approve; it simply shows a mother and a son conspiring to deceive a blind father — and lets the cost come.

Four senses, and the one that told the truth. Robbed of sight, Isaac tests his son by every other sense — and the deception survives each. Touch: the goatskins make Jacob's hands hairy like Esau's. Taste: the savory food and wine. Smell: Esau's field-scented garments — "the smell of my son is like the smell of a field Jehovah has blessed." Only hearing catches it: "the voice is the voice of Jacob, but the hands are the hands of Esau" — the one sense that told the truth, and the one Isaac overrode. And so the blessing is spoken over the wrong son: the covenant plenty (dew, fatness, grain and new wine), then dominion — "be lord over your brothers, let your mother's sons bow" — which is the very oracle of 25:23 enacted; and finally Abraham's own words, "cursed be those who curse you, and blessed be those who bless you" (12:3). The whole promise, stolen intact.

The word that cannot be recalled. Esau walks in moments later, and Isaac trembles with a very great trembling — a violent, uncontrollable shudder — as he grasps what has happened. And then the line that makes the whole scene turn: "I blessed him — and blessed he shall be!" In Genesis a father's blessing is not a wish but a released, irrevocable word; once spoken, it stands. Esau answers with the most anguished cry in the book — a "great and exceedingly bitter cry" — "Bless me too, my father!" (the New Testament remembers him as the man who "found no place for repentance, though he sought it with tears," Hebrews 12:17). Isaac names the theft plainly: "your brother came with deceit" (mirmah; KJV "subtilty"). And Esau turns the name into an accusation: "Is he not rightly named Jacob (Ya'aqov)? He has supplanted me (ya'aqveni) these two times — my birthright, and now my blessing." What is left for Esau is a near-anti-blessing, and a real crux: "away from the fat places of the earth will be your dwelling" — the same Hebrew preposition (min) that gave Jacob his portion "of" the fatness now, in context, most likely means "away from" (Edom's land is dry); the KJV reads it in parallel, "of the fatness," but the sword-and-servitude that follows fits the harsher sense. His one hope: "when you break loose, you will tear his yoke from your neck" — Edom's later revolts against Judah in a single line.

The cost begins. Esau's grief curdles into murder: "when my father is mourned, I will kill my brother Jacob" — the oldest sin in the family, brother rising against brother as Cain rose against Abel. Rebekah, who engineered the theft, now has to save her favorite from it: flee to my brother Laban "for a few days," she says — and the few days will be twenty years, and she will die without seeing him again. The deceiver is about to begin his own long schooling in being deceived, at Laban's hands. And Rebekah's last word is a masterstroke of misdirection: to Isaac she says nothing of murder, only "I loathe my life because of these Hittite daughters-in-law" — turning Esau's real Hittite marriages (26:34-35) into the perfect, respectable pretext to send Jacob safely east to find a wife. The next chapter follows him out the door.