19. God said, “No, I said that your wife Sarah will have a son. You will name him Isaac. I will make my agreement with him that will continue forever with all his descendants.
20. “You mentioned Ishmael, and I heard you. I will bless him, and he will have many children. He will be the father of twelve great leaders. His family will become a great nation.
21. But I will make my agreement with Isaac, the son who Sarah will have. He will be born at this same time next year.”
22. After God finished talking with Abraham, God went up into heaven.
23. Then Abraham gathered together Ishmael and all the slaves born in his house. He also gathered all the slaves he had bought. Every man and boy in Abraham’s house was gathered together, and they were all circumcised. Abraham circumcised them that day, just as God had told him to do.
24. Abraham was 99 years old when he was circumcised.
25. And Ishmael, his son, was 13 years old when he was circumcised.
26. Abraham and his son were circumcised on the same day.
27. Also, on that day all the men in Abraham’s house were circumcised. All the slaves born in his house and all the slaves he had bought were circumcised.