After these things God tested Abraham, and said to him, “Abraham!” And he said, “Here am I.” 2 He said, “Take your son, your only son Isaac, whom you love, and go to the land of Mori’ah, and offer him there as a burnt offering upon one of the mountains of which I shall tell you.” 3 So Abraham rose early in the morning, saddled his ass, and took two of his young men with him, and his son Isaac; and he cut the wood for the burnt offering, and arose and went to the place of which God had told him.
–Genesis 22:1-3