10. This is My covenant, which you shall keep, between Me and you and your posterity after you: Every male among you shall be circumcised.
11. And you shall circumcise the flesh of your foreskin, and it shall be a token or sign of the covenant (the promise or pledge) between Me and you.
12. He who is eight days old among you shall be circumcised, every male throughout your generations, whether born in [your] house or bought with [your] money from any foreigner not of your offspring.
13. He that is born in your house and he that is bought with your money must be circumcised; and My covenant shall be in your flesh for an everlasting covenant.
14. And the male who is not circumcised, that soul 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; but Sarah [Princess] her name shall be.
16. And I will bless her and give you a son also by her. Yes, I will bless her, and she shall be a mother of nations; kings of peoples shall come from her.
17. Then Abraham fell on his face and laughed and said in his heart, Shall a child be born to a man who is a hundred years old? And shall Sarah, who is ninety years old, bear a son?
18. And [he] said to God, Oh, that Ishmael might live before You!
19. But God said, Sarah your wife shall bear you a son indeed, and you shall call his name Isaac [laughter]; and I will establish My covenant or solemn pledge with him for an everlasting covenant and with his posterity after him.
20. And as for Ishmael, I have heard and heeded you: behold, I will bless him and will make him fruitful and will multiply him exceedingly; He will be the father of twelve princes, and I will make him a great nation. [Fulfilled in Gen. 25:12-18.]
21. But My covenant, My promise and pledge, I will establish with Isaac, whom Sarah will bear to you at this season next year.