Genesis 17:25
King James Version
“And Ishmael his son thirteen years old, when he was circumcised in the flesh of his foreskin.”
Context
22And he left off talking with him, and God went up from Abraham.
23And Abraham took Ishmael his son, and all that were born in his house, and all that were bought with his money, every male among the men of Abraham’s house; and circumcised the flesh of their foreskin in the selfsame day, as God had said unto him.
24And Abraham ninety years old and nine, when he was circumcised in the flesh of his foreskin.
25And Ishmael his son thirteen years old, when he was circumcised in the flesh of his foreskin.
26In the selfsame day was Abraham circumcised, and Ishmael his son.
27And all the men of his house, born in the house, and bought with money of the stranger, were circumcised with him.