Genesis 17:25

American Standard Version (1901)

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

See the chapter Copy

And Abram was fourscore and six years old, when Hagar bare Ishmael to Abram.

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

And Hagar bare Abram a son: and Abram called the name of his son, whom Hagar bare, Ishmael.