Genesis 22
1 After these things, God tested Avraham. He said to him, “Avraham!” and he answered, “Here I am.”
2 He said, “Take your son, your only son, whom you love, Yitz’chak; and go to the land of Moriyah. There you are to offer him as a burnt offering on a mountain that I will point out to you.”
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11 But the angel of Adonai called to him out of heaven: “Avraham? Avraham!” He answered, “Here I am.”
12 He said, “Don’t lay your hand on the boy! Don’t do anything to him! For now I know that you are a man who fears God, because you have not withheld your son, your only son, from me.”