Genesis 17:9-11

21st Century King James Version

⁹ And God said unto Abraham, “Thou shalt keep My covenant, therefore, thou and thy seed after thee in their generations.

¹⁰ This is My covenant which ye shall keep between Me and you and thy seed after thee: every manchild among you shall be circumcised.

¹¹ And ye shall circumcise the flesh of your foreskin; and it shall be a token of the covenant between Me and you.