In the selfsame day was Abraham circumcised, and Ishmael his son.
I made haste, and delayed not, To observe thy commandments.
So Abram went, as Jehovah had spoken unto him; and Lot went with him: and Abram was seventy and five years old when he departed out of Haran.
And Ishmael his son was thirteen years old, when he was circumcised in the flesh of his foreskin.
And all the men of his house, those born in the house, and those bought with money of a foreigner, were circumcised with him.