Genesis 17:25 YLT

²³  And Abraham taketh Ishmael his son, and all those born in his house, and all those bought with his money -- every male among the men of Abraham's house -- and circumciseth the flesh of their foreskin, in this self-same day, as God hath spoken with him.

²⁴  And Abraham 'is' a son of ninety and nine years in the flesh of his foreskin being circumcised;

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.