Genesis 17:24-27 Amplified Bible (AMP)

24. And Abraham was ninety-nine years old when he was circumcised.

25. And Ishmael his son was thirteen years old when he was circumcised.

26. On the very same day Abraham was circumcised, and Ishmael his son as well.

27. And all the men of his house, both those born in the house and those bought with money from a foreigner, were circumcised along with him.

Genesis 17