Genesis 17:11-13

New King James Version

¹¹ and you shall be circumcised in the flesh of your foreskins, and it shall be ^(A)a sign of the covenant between Me and you. ¹² He who is eight days old among you ^(B)shall be circumcised, every male child in your generations, he who is born in your house or bought with money from any foreigner who is not your descendant. ¹³ He who is born in your house and he who is bought with your money must be circumcised, and My covenant shall be in your flesh for an everlasting covenant.