Genesis 22:2-3

And he said, Take now thy son, thine only son, whom thou lovest, even Isaac, and get thee into the land of Moriah; and offer him there for a burnt-offering upon one of the mountains which I will tell thee of. And Abraham rose early in the morning, and saddled his ass, and took two of his young men with him, and Isaac his son; and he clave the wood for the burnt-offering, and rose up, and went unto the place of which God had told him.