Genesis 17:24-26

BRG Bible

²⁴ And Abraham was ninety years old and nine, when he was circumcised in the flesh of his foreskin.

²⁵ And Ishmael his son was thirteen years old, when he was circumcised in the flesh of his foreskin.

²⁶ In the selfsame day was Abraham circumcised, and Ishmael his son.