Genesis 22:2, 7-8, 13

God said, “Please take your son, your only son, Isaac, whom I know you dearly love, and go to the land of Moriah. Offer him up to me as a burnt offering on one of the mountains which I will show you.”

“Father?” Isaac broke the silence. “Yes, my son,” Abraham replied. “We have the wood and the fire,” Isaac said, “but where is the lamb for the burnt offering?” Abraham answered, “My son, God himself will provide the lamb for an offering.” So they went on together.

As Abraham looked up, his eyes fell upon a ram caught by its horns in a nearby thicket. Abraham took the ram and sacrificed it on the altar as a burnt offering in Isaac’s place.