Genesis 22
9 Ref They came to the place which God had told him of. Abraham built the altar there, and laid the wood in order, bound Isaac his son, and laid him on the altar, on the wood.
10 Ref Abraham stretched forth his hand, and took the knife to kill his son.
11 Ref The angel of Yahweh called to him out of the sky, and said, "Abraham, Abraham!" He said, "Here I am."
12 Ref He said, "Don't lay your hand on the boy, neither do anything to him. For now I know that you fear God, seeing you have not withheld your son, your only son, from me."