Genesis 17:11 YLT

⁹  And God saith unto Abraham, 'And thou dost keep My covenant, thou and thy seed after thee, to their generations;

¹⁰  this 'is' My covenant which ye keep between Me and you, and thy seed after thee: Every male of you 'is' to be circumcised;

¹¹  and ye have circumcised the flesh of your foreskin, and it hath become a token of a covenant between Me and you.

¹²  'And a son of eight days is circumcised by you; every male to your generations, born in the house, or bought with money from any son of a stranger, who is not of thy seed;

¹³  he is certainly circumcised who 'is' born in thine house, or bought with thy money; and My covenant hath become in your flesh a covenant age-during;