Genesis 17:23-25

Christian Standard Bible

²³ So Abraham took his son Ishmael and those born in his household or purchased—every male among the members of Abraham’s household—and he circumcised the flesh of their foreskin on that very day, just as God had said to him. ²⁴ Abraham was ninety-nine years old when the flesh of his foreskin was circumcised, ²⁵ and his son Ishmael was thirteen years old when the flesh of his foreskin was circumcised.