Then God said, “Take your son, your only son, Isaac, whom you love, and go to the region of Moriah. Sacrifice him there as a burnt offering on one of the mountains I will tell you about.” Gen. 22:2.
The angel of the LORD also said to her: “You are now with child and you will have a son. You shall name him Ishmael, for the LORD has heard of your misery. He will be a wild donkey of a man; his hand will be against everyone and everyone’s hand against him, and he will live in hostility toward all his brothers.” She gave this name to the LORD who spoke to her: “You are the God who sees me,” for she said, “I have now seen the One who sees me.” Gen. 16:11-13.
Abraham built an altar there and arranged the wood on it. He bound his son Isaac and laid him on the altar, on top of the wood. Then he reached out his hand and took the knife to slay his son. But the angel of the LORD called out to him from heaven, “Abraham! Abraham!” “Here I am,” he replied. Do not lay a hand on the boy,” he said. “Do not do anything to him. Now I know that you fear God, because you have not withheld from me your son, your only son.” Gen 22:9-12