Verse 22

because of this, Moses hath given you the circumcision -- not that it is of Moses, but of the fathers -- and on a sabbath ye circumcise a man;

Referenced Verses

• Lev 12:3 : 3 and in the eighth day is the flesh of his foreskin circumcised;
• Gen 17:10-14 : 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; 14 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.'
• Rom 4:9-9 : 9 `Is' this happiness, then, upon the circumcision, or also upon the uncircumcision -- for we say that the faith was reckoned to Abraham -- to righteousness? 10 how then was it reckoned? he being in circumcision, or in uncircumcision? not in circumcision, but in uncircumcision; 11 and a sign he did receive of circumcision, a seal of the righteousness of the faith in the uncircumcision, for his being father of all those believing through uncircumcision, for the righteousness also being reckoned to them,
• Gal 3:17 : 17 and this I say, A covenant confirmed before by God to Christ, the law, that came four hundred and thirty years after, doth not set aside, to make void the promise,