Genesis 22:9-11

Complete Jewish Bible

⁹ They came to the place God had told him about; and Avraham built the altar there, set the wood in order, bound Yitz’chak his son and laid him on the altar, on the wood. ¹⁰ Then Avraham put out his hand and took the knife to kill his son.

¹¹ But the angel of Adonai called to him out of heaven: “Avraham? Avraham!” He answered, “Here I am.”