Bible Verses About Proselytes: To be circumcised

The slave born in your house and the person bought with your money must be circumcised; thus my covenant will be in your flesh as an everlasting covenant.

If a foreigner staying with you wants to observe ADONAI's Pesach, all his males must be circumcised. Then he may take part and observe it; he will be like a citizen of the land. But no uncircumcised person is to eat it.