Genesis 22:5-8

He said to his servants, “Stay here with the donkey. My son and I will go over there and worship, and then we will come back to you.” Abraham took the wood for the sacrifice and gave it to his son to carry, but he himself took the knife and the fire. So he and his son went on together. Isaac said to his father Abraham, “Father!” Abraham answered, “Yes, my son.” Isaac said, “We have the fire and the wood, but where is the lamb we will burn as a sacrifice?” Abraham answered, “God will give us the lamb for the sacrifice, my son.” So Abraham and his son went on together