Genesis 17:27 YLT

²⁵  and Ishmael his son 'is' a son of thirteen years in the flesh of his foreskin being circumcised;

²⁶  in this self-same day hath Abraham been circumcised, and Ishmael his son;

²⁷  and all the men of his house -- born in the house, and bought with money from the son of a stranger -- have been circumcised with him.