Thematic Bible: First performed on abraham and his family

Abraham [was] ninety-nine years old when he circumcised the flesh of his foreskin. And Ishmael his son [was] thirteen years old when he circumcised the flesh of his foreskin. Abraham and his son Ishmael [were] circumcised on the same day. read more.
And all the men of his house, {those born in the house, and those acquired by money from a foreigner}, were circumcised with him.