13 Whether born in your household or bought with your money, they must be circumcised. My covenant in your flesh is to be an everlasting covenant.

Read Genesis 17:13 Using Other Translations

He that is born in thy house, and he that is bought with thy money, must needs be circumcised: and my covenant shall be in your flesh for an everlasting covenant.
both he who is born in your house and he who is bought with your money, shall surely be circumcised. So shall my covenant be in your flesh an everlasting covenant.
All must be circumcised. Your bodies will bear the mark of my everlasting covenant.