1 Now it came about after these things, that God tested Abraham, and said to him, “Abraham!” And he said, “Here I am.” 2 He said, “Take now your son, your only son, whom you love, Isaac, and go to the land of Moriah, and offer him there as a burnt offering on one of the mountains of which I will tell you.” 3 So Abraham rose early in the morning and saddled his donkey, and took two of his young men with him and Isaac his son; and he split wood for the burnt offering, and arose and went to the place of which God had told him. 4 On the third day Abraham raised his eyes and saw the place from a distance. 5 Abraham said to his young men, “Stay here with the donkey, and I and the lad will go over there; and we will worship and return to you.” 6 Abraham took the wood of the burnt offering and laid it on Isaac his son, and he took in his hand the fire and the knife. So the two of them walked on together. 7 Isaac spoke to Abraham his father and said, “My father!” And he said, “Here I am, my son.” And he said, “Behold, the fire and the wood, but where is the lamb for the burnt offering?” 8 Abraham said, “God will provide for Himself the lamb for the burnt offering, my son.” So the two of them walked on together.
This has always been an amazing story to me. God tells Abraham to go sacrifice his son, his only son, and Abraham doesn’t even quibble. In verse eight, we find out why. Abraham knew God didn’t really want him to sacrifice Isaac his son. He trusted God to provide a sacrifice. After all this time, he remembered God’s promise, and knew that Isaac was the fulfillment of that promise (God had told him so). There was no question in Abraham’s mind that God would provide.