17Genesis 17:21

19And God said, Sarah thy wife shall bear thee a son indeed; and thou shalt call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his seed after him.Select Genesis 17:19

20And as for Ishmael, I have heard thee: Behold, I have blessed him, and will make him fruitful, and will multiply him exceedingly; twelve princes shall he beget, and I will make him a great nation.Select Genesis 17:20

21But my covenant will I establish with Isaac, which Sarah shall bear unto thee at this set time in the next year.Select Genesis 17:21

22And he left off talking with him, and God went up from Abraham.Select Genesis 17:22

23And Abraham took Ishmael his son, and all that were born in his house, and all that were bought with his money, every male among the men of Abraham’s house; and circumcised the flesh of their foreskin in the selfsame day, as God had said unto him.Select Genesis 17:23