Isaac bears the cost of a decision he did not make.
Isaac walks with Abraham, carries the wood, notices the missing animal, and asks a direct question. He is not a symbol alone. He is a son who has enough information to sense that something is missing, but not enough to understand the danger.
Abraham's answer may be read as trust, evasion, or both. The text does not explain it. What it plainly shows is an uneven relationship: Abraham knows more, decides more, and has power over Isaac's body. Any account of sacrifice has to ask who pays for another person's conviction.
The story draws a limit at the moment of harm.
At the altar, Abraham binds Isaac, takes the knife, and is stopped by a messenger from heaven. A ram is then provided and offered in Isaac's place. The narrative moves all the way to threatened loss, but it does not permit the killing to occur.
That interruption matters. The story praises Abraham's refusal to withhold what is most precious, yet it also replaces the child with an animal. It holds two difficult claims beside each other: commitment may demand real surrender, and not every demand that reaches toward harm is allowed to finish its course.