English Standard Version
Chapter 17 21
But I will establish my covenant with Isaac, whom Sarah shall bear to you at this time next year.” 22
When he had finished talking with him, God went up from Abraham. 23
Then Abraham took Ishmael his son and all those born in his house or bought with his money, every male among the men of Abraham’s house, and he circumcised the flesh of their foreskins that very day, as God had said to him.