17:16. And I will bless her, and of her I will give thee a son, whom I will bless, and he shall become nations, and kings of people shall spring from him.
17:17. Abraham fell upon his face, and laughed, saying in his heart: Shall a son, thinkest thou, be born to him that is a hundred years old? and shall Sara that is ninety years old bring forth?
17:18. And he said to God: O that Ismael may live before thee.
17:19. And God said to Abraham: Sara thy wife shall bear thee a son, and thou shalt call his name Isaac, and I will establish my covenant with him for a perpetual covenant, and with his seed after him.
17:20. And as for Ismael I have also heard thee. Behold, I will bless him, and increase, and multiply him exceedingly: he shall beget twelve chiefs, and I will make him a great nation.
17:21. But my covenant I will establish with Isaac, whom Sara shall bring forth to thee at this time in the next year.
17:22. And when he had left off speaking with him, God went up from Abraham.
17:23. And Abraham took Ismael his son, and all that were born in his house: and all whom he had bought, every male among the men of his house: and he circumcised the flesh of their foreskin forthwith the very same day, as God had commanded him.
17:24. Abraham was ninety and nine years old, when he circumcised the flesh of his foreskin.
17:25. And Ismael his son was full thirteen years old at the time of his circumcision.