Genesis 22:4-6

Then on the third day Abraham lifted his eyes and saw the place afar off. And Abraham said to his young men, “Stay here with the donkey; the lad and I will go yonder and worship, and we will come back to you.” So Abraham took the wood of the burnt offering and laid it on Isaac his son; and he took the fire in his hand, and a knife, and the two of them went together.