20 “As for Ishmael, I have heard you. I will bless him and give him many descendants. And I will cause their numbers to grow greatly. He will be the father of twelve great leaders, and I will make him into a great nation.
21 But I will make my agreement with Isaac, the son whom Sarah will have at this same time next year.”
22 After God finished talking with Abraham, God rose and left him.
23 Then Abraham gathered Ishmael, all the males born in his camp, and the slaves he had bought. So that day Abraham circumcised every man and boy in his camp as God had told him to do.
24 Abraham was ninety-nine years old when he was circumcised.
25 And Ishmael, his son, was thirteen years old when he was circumcised.
26 Abraham and his son were circumcised on the same day.