Genesis 17:12-14

Amplified Bible

¹² Every male among you who is eight days old shall be circumcised throughout your generations, [including] a servant whether born in the house or one who is purchased with [your] money from any foreigner, who is not of your descendants. ¹³ A servant who is born in your house or one who is purchased with your money must be circumcised; and [the sign of] My covenant shall be in your flesh for an everlasting covenant. ¹⁴ And the male who is not circumcised in the flesh of his foreskin, that person shall be cut off from his people; he has broken My covenant.”