Genesis 17:23-25

Lexham English Bible

²³ And Abraham took Ishmael his son and all who were born of his house, and all those acquired by his money, every male among the men of Abraham’s house, and he circumcised the flesh of their foreskin on the same day that God spoke with him. ²⁴ Abraham was ninety-nine years old when he circumcised the flesh of his foreskin. ²⁵ And Ishmael his son was thirteen years old when he circumcised the flesh of his foreskin.