Genesis 17:24-27 ▼

24 Abraham was 99 years old when he was circumcised,

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

26 Both Abraham and his son Ishmael were circumcised on that very day.

27 Every man born in his household—as well as those who had been purchased with money from a foreigner—was circumcised with him.