Thematic Bible: First performed on abraham and his family

Abraham was ninety years old and nine when he cut off the foreskin of his flesh. And Ishmael his son was thirteen years old, when the foreskin of his flesh was circumcised. The selfsame day was Abraham circumcised and Ishmael his son. read more.
And all the men in his house, whether they were born in his house or bought with money, though they were strangers, were circumcised with him.