Genesis 17:21-23

New Living Translation

²¹ But my covenant will be confirmed with Isaac, who will be born to you and Sarah about this time next year.” ²² When God had finished speaking, he left Abraham.

²³ On that very day Abraham took his son, Ishmael, and every male in his household, including those born there and those he had bought. Then he circumcised them, cutting off their foreskins, just as God had told him.