Genesis 22:2, 7-8, 13

“Take your son, your only son—yes, Isaac, whom you love so much—and go to the land of Moriah. Go and sacrifice him as a burnt offering on one of the mountains, which I will show you.”

Isaac turned to Abraham and said, “Father?” “Yes, my son?” Abraham replied. “We have the fire and the wood,” the boy said, “but where is the sheep for the burnt offering?” “God will provide a sheep for the burnt offering, my son,” Abraham answered. And they both walked on together.

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