10. This is my covenant which you shall keep, between me and you, and also with your offspring after you: Every male among you shall be circumcised.
11. And you shall circumcise the flesh of your foreskin, and it shall be a sign of the covenant between me and you.
12. And at eight days of age you shall yourselves circumcise every male belonging to your generations and the servant born in your house and the one bought from any foreigner who is not from your offspring.
13. You must certainly circumcise the servant born in your house and the one bought from any foreigner. And my covenant shall be with your flesh as an everlasting covenant.
14. And as for any uncircumcised male who has not circumcised the flesh of his foreskin, that person shall be cut off from his people. He has broken my covenant.
15. And God said to Abraham, “as for Sarai your wife, you shall not call her name Sarai, for Sarah shall be her name.
16. And I will bless her; moreover, I give to you from her a son. And I will bless her, and she shall give rise to nations. Kings of peoples shall come from her.”
17. And Abraham fell upon his face and laughed. And he said in his heart, “Can a child be born to a man a hundred years old, or can Sarah bear a child at ninety?”
18. And Abraham said to God, “Oh that Ishmael might live before you!”
19. And God said, “No, but Sarah your wife shall bear a son for you, and you shall call his name Isaac. And I will establish my covenant with him as an everlasting covenant to his offspring after him.
20. And as for Ishmael, I have heard you. Behold, I will bless him and I will make him fruitful, and I will multiply him exceedingly. He shall father twelve princes, and I will make him a great nation.
21. But my covenant I will establish with Isaac, whom Sarah shall bear to you at this appointed time next year.”