Genesis 17
9 Ref And God saith unto Abraham, `And thou dost keep My covenant, thou and thy seed after thee, to their generations;
10 Ref 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 Ref and ye have circumcised the flesh of your foreskin, and it hath become a token of a covenant between Me and you.
12 Ref `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 Ref 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;
14 Ref and an uncircumcised one, a male, the flesh of whose foreskin is not circumcised, even that person hath been cut off from his people; My covenant he hath broken.'