Genesis 17:9-14 - The Mark Of The Covenant

⁹ And God said unto Abraham, "See thou keep my covenant, both thou and thy seed after thee in their times. ¹⁰ This is my covenant which ye shall keep between me and you and thy seed after thee: that ye circumcise all your men children. ¹¹ Ye shall circumcise the foreskin of your flesh, and it shall be a token of the covenant betwixt me and you. ¹² And every manchild when it is eight days old, shall be circumcised among you in your generations, and all servants also born at home or bought with money, though they be strangers and not of thy seed. ¹³ The servant born in thy house, and he also that is bought with money, must needs be circumcised, that my covenant may be in your flesh, for an everlasting bond. ¹⁴ If there be any uncircumcised manchild, that hath not the foreskin of his flesh cut off, his soul shall perish from his people: because he hath broken my covenant."