Genesis 22:2, 7-8, 13

He said, “Take your dear son Isaac whom you love and go to the land of Moriah. Sacrifice him there as a burnt offering on one of the mountains that I’ll point out to you.”

Isaac said to Abraham his father, “Father?” “Yes, my son.” “We have flint and wood, but where’s the sheep for the burnt offering?” Abraham said, “Son, God will see to it that there’s a sheep for the burnt offering.” And they kept on walking together.

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