19. And God said, Sarah thy wife shall indeed bear thee a son; and thou shalt call his name Isaac; and I will establish my covenant with him, for an everlasting covenant for his seed after him.
20. And for Ishmael I have heard thee: behold, I will bless him, and will make him fruitful, and will very greatly multiply him; twelve princes shall he beget, and I will make him a great nation.
21. But my covenant will I establish with Isaac, whom Sarah shall bear to thee at this appointed time in the next year.
22. And he left off talking with him; and God went up from Abraham.
23. And Abraham took Ishmael his son, and all who were born in his house, and all who were bought with his money--every male among the people of Abraham's house--and circumcised the flesh of their foreskin on that same day, as God had said to him.