Genesis 22:2, 7, 13

Then God said, “Take your son, your only son, whom you love—Isaac—and go to the region of Moriah. Sacrifice him there as a burnt offering on a mountain I will show you.”

Isaac spoke up and said to his father Abraham, “Father?” “Yes, my son?” Abraham replied. “The fire and wood are here,” Isaac said, “but where is the lamb for the burnt offering?”

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