Genesis 22:9-12

9Then they came to the place about which God had told him, and Abraham built the altar there, laid out the wood, bound up Isaac his son, and laid him on the altar, on top of the wood.

10Then Abraham reached out his hand and took the knife to slaughter his son.

11But the angel of Adonai called to him from heaven and said, “Abraham! Abraham!” He said, “Hineni!”

12Then He said, “Do not reach out your hand against the young man—do nothing to him at all. For now I know that you are one who fears God—you did not withhold your son, your only son, from Me.”