Genesis 17:10-12

Living Bible

^9-10 “Your part of the contract,” God told him, “is to obey its terms. You personally and all your posterity have this continual responsibility: that every male among you shall be circumcised; ¹¹ the foreskin of his penis shall be cut off. This will be the proof that you and they accept this covenant. ¹² Every male shall be circumcised on the eighth day after birth. This applies to every foreign-born slave as well as to everyone born in your household. This is a permanent part of this contract, and it applies to all your posterity.