Genesis 22:8-13

8Abraham answered, “God himself will provide the lamb for the burnt offering, my son.” Then the two of them walked on together.

9When they arrived at the place that God had told him about, Abraham built the altar there and arranged the wood. He bound his son Isaac and placed him on the altar on top of the wood.

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

11But the angel of the Lord called to him from heaven and said, “Abraham, Abraham!” He replied, “Here I am.”

12Then he said, “Do not lay a hand on the boy or do anything to him. For now I know that you fear God, since you have not withheld your only son from me.”

13Abraham looked up and saw a ram caught in the thicket by its horns. So Abraham went and took the ram and offered it as a burnt offering in place of his son.