And he received the sign of circumcision, a seal of the justice of the faith, which he had, being uncircumcised; that he might be the father of all them that believe, being uncircumcised, that unto them also it may be reputed to justice:
And he gave him the covenant of circumcision, and so he begot Isaac, and circumcised him the eighth day; and Isaac begot Jacob; and Jacob the twelve patriarchs.
And David sent messengers to Isboseth the son of Saul, saying: Restore my wife Michol, whom I espoused to me for a hundred foreskins of the Philistines.
And if any stranger be willing to dwell among you, and to keep the Phase of the Lord, all his males shall first be circumcised: and then shall he celebrate it according to the manner. And he shall be as he that is born in the land: but if any man be uncircumcised, he shall not eat thereof.
And God said: This is the sign of the covenant which I will give between me and you, and to every living soul that is with you, for perpetual generations.