Genesis 22:15-17
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The angel of Yahweh called to Abraham a second time out of the sky,
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and said, "I have sworn by myself, says Yahweh, because you have done this thing, and have not withheld your son, your only son,
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that I will bless you greatly, and I will multiply your seed greatly like the stars of the heavens, and like the sand which is on the seashore. Your seed will possess the gate of his enemies.