Genesis 22:2

22:2 God said, “Take your son – your only son, whom you love, Isaac – and go to the land of Moriah! Offer him up there as a burnt offering on one of the mountains which I will indicate to you.”

Genesis 22:7

22:7 Isaac said to his father Abraham, “My father?” “What is it, my son?” he replied. “Here is the fire and the wood,” Isaac said, “but where is the lamb for the burnt offering?”

Genesis 22:13

22:13 Abraham looked up and saw behind him a ram caught in the bushes by its horns. So he went over and got the ram and offered it up as a burnt offering instead of his son.