What Does Genesis 27:10 Mean?

After Isaac finished blessing him, and Jacob had scarcely left his father's presence, his brother Esau came in from hunting. He too prepared some tasty food and brought it to his father. Then he said to his father, "My father, please sit up and eat some of my son's game, so that you may give me your blessing." His father Isaac asked him, "Who are you?" "I am your son," he answered, "Esau your firstborn." Isaac trembled violently and said, "Who was it, then, that hunted game and brought it to me? I ate it just before you came and I blessed him, and indeed he will be blessed!" The arrival of Esau with the actual game is the chapter's catastrophe point. Isaac's violent trembling at the realization is the patriarch's physical response to understanding the scope of what has just happened: the blessing he gave was not given to the son he intended, and it cannot be revoked. His body knows before his mind fully articulates it that everything has shifted.

"Who was it, then, that hunted game?" is Isaac's question for a reality he cannot explain: someone came before Esau, brought food Isaac cannot track, received the full covenant blessing, and is gone. The answer the question implies, that another son came in Esau's place, is a conclusion Isaac arrives at in the next verses. The violent trembling that precedes the answer is the response to the gap opening between what Isaac intended and what has occurred. The same God who went before the servant in chapter 24 has gone before Jacob in chapter 27, and the result cannot be undone.

"Indeed he will be blessed" is Isaac's statement that the blessing is irrevocable. Not "I made a mistake and I will fix it" but "whoever received this blessing, it holds." The irrevocability of the spoken covenant blessing is the patriarchal narrative's consistent assumption: words of blessing and curse operate in the world they are spoken into, and they cannot be recalled. Jesus's declaration that his words "will never pass away" (Matthew 24:35) is the New Testament's parallel: the covenant's authoritative speech, once spoken, stands.