The Hebrew narrative is told in nineteen verses and is famous for what it withholds. God calls, Abraham answers with a single word meaning here I am, and is told to take his son, his only one, the one he loves, Isaac, and to offer him on a mountain that will be shown. There is no protest, though the same man had argued at length over the fate of a city not long before. He rises early, saddles the donkey, splits the wood, and walks for three days. On the third he sees the place from a distance, leaves the servants with the animal, loads the wood on the boy, and takes the fire and the knife himself. The only exchange between them is the boy asking where the lamb is and the father answering that God will see to it, after which the text repeats that the two of them walked on together.
He builds the altar, arranges the wood, binds his son, lays him on it, and reaches out his hand. The voice calls his name twice and stops him, a ram is caught by its horns in a thicket, and the place is named for the seeing. Jewish tradition calls the episode the Akedah, the binding, taking its name from the act of tying rather than from the intended killing, and it stands at the centre of the liturgy of the New Year, where the ram's horn sounded is understood as a reminder of that ram. Isaac's age, his awareness, and whether he was in any sense a willing participant are all supplied by later midrash rather than by the text, which says nothing about any of them.