Deuteronomy 23:7-9

New Revised Standard Version Catholic Edition

⁷ You shall not abhor any of the Edomites, for they are your kin. You shall not abhor any of the Egyptians, because you were an alien residing in their land. ⁸ The children of the third generation that are born to them may be admitted to the assembly of the Lord.

Sanitary, Ritual, and Humanitarian Precepts

⁹ When you are encamped against your enemies you shall guard against any impropriety.