God told him, “Go with your son, your only son, the one you love, to the land of Moriah and sacrifice him there as a burnt offering on one of the mountains that I'll tell you about.”
“No, it's your wife Sarah who is going to have a son for you!” God replied. “You are to call him Isaac. I will keep my agreement with him and his descendants as an eternal agreement.
But God told Abraham, “Don't feel bad about the boy and the slave woman. Do whatever Sarah tells you, because it's through Isaac that your descendants will be counted.
The angel said, “Don't touch the boy! Don't do anything to him, because now I know that you truly do what God tells you. You didn't refuse to give me your son, your only son.”
Abraham got up early in the morning and saddled up his donkey. He took two servants and Isaac with him and went to cut firewood for the burnt offering. Then he left with them to go to the place God had told him about.
When they arrived at the place where God had told him to go, Abraham built an altar and placed the wood on it. Then he bound his son Isaac and placed him on the altar on top of the wood.
So the king of Moab took his firstborn son, who was meant to succeed him, and sacrificed him as a burnt offering on the town wall. Great anger came upon the Israelites, so they left and went back to their own country.
Then Solomon began building the Temple of the Lord in Jerusalem on Mount Moriah, where the Lord appeared to his father David. This was the place that David had provided—the former threshing floor of Ornan the Jebusite.
Will the Lord be pleased with thousands of rams, or ten thousand rivers of olive oil? Shall I sacrifice my firstborn child for my rebellion, my own flesh and blood for the sins I have committed?
Abraham trusted God when he was tested and offered Isaac to God. Abraham, who had accepted God's promises, was still ready to offer to God his only son,
I will dedicate to the Lord whatever comes out of the door of my house to meet me on my safe return from the battle. I will present it as a burnt offering.”
When the two months were over, she returned to her father, and he did to her as he had promised, and she was a virgin. This is the origin of the custom in Israel