The selfsame day was Abraham circumcised, and Ismael his son.
So Abram went out as the Lord had commanded him; and Lot went with him. Abram was seventy-five years old when he went forth from Haran.
And Ismael his son was full thirteen years old at the time of his circumcision.
And all the men of his house, as well they that were born in his house, as the bought servants and strangers were circumcised with him.