Genesis 17:21-23

King James Version

²¹ But my covenant will I establish with Isaac, which Sarah shall bear unto thee at this set 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 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.