Genesis 17:12-13

The Voice

^12-13 From this point onward, throughout coming generations, each male child born to you should be circumcised when he is eight days old. You must circumcise all male members of your household, even the slaves born within your household or the servants purchased from foreigners who aren’t your flesh and blood; anyone and everyone within your household must carry this sign. This external mark on his body will be a sign of My everlasting covenant.