Genesis 17:16-27

16I will bless her, and indeed I will give you 1a son by her. Then I will bless her, and she shall be a mother of nations; 2kings of peoples will 3come from her.” 17Then Abraham 4fell on his face and laughed, and said in his heart, “Will a child be born to a man a hundred years old? And 5will Sarah, who is ninety years old, give birth to a child?” 18And Abraham said to God, “Oh that Ishmael might live before You!” 19But God said, “No, but your wife Sarah will bear you 6a son, and you shall name him 7Isaac; and 8I will establish My covenant with him as an everlasting covenant for his 9descendants after him. 20As for Ishmael, I have heard you; behold, I will bless him, and 10make him fruitful and multiply him exceedingly. 11He shall father twelve princes, and I will make him into a 12great nation. 21But I will establish My covenant with 13Isaac, whom 14Sarah will bear to you at this season next year.” 22When He finished talking with him, 15God went up from Abraham.

23Then Abraham took his son Ishmael, and all the slaves who were 16born in his house and all who were bought with his money, every male among the men of Abraham’s household, and circumcised the flesh of their foreskin on this very same day, 17as God had said to him. 24Now Abraham was ninety-nine years old when 18he was circumcised in the flesh of his foreskin. 25And his son 19Ishmael was thirteen years old when he was circumcised in the flesh of his foreskin. 26On this very same day Abraham was circumcised, as well as his son Ishmael. 27And all the men of his household, those who were 20born in the house or bought with money from a foreigner, were circumcised with him.