TSK · Genesis 21:4

This is my couenant which ye shall keepe betweene me & you, & thy seede after thee, Let euery man childe among you be circumcised:

But if a stranger dwell with thee, and will obserue the Passeouer of the Lorde, let him circumcise all the males, that belong vnto him, and then let him come and obserue it, & he shall be as one that is borne in the land: for none vncircumcised person shall eate thereof.

Therefore whatsoeuer I command you, take heede you doe it: thou shalt put nothing thereto, nor take ought therefrom.

And it was so that on the eight day they came to circumcise the babe, and called him Zacharias after the name of his father.

Moses therefore gaue vnto you circumcision, (not because it is of Moses, but of the fathers) & ye on the Sabbath day circumcise a man.