Deuteronomy 23:1-3

“No one who is emasculated or has his male organ cut off may enter the assembly of the Lord.

No one of illegitimate birth may enter the assembly of the Lord; none of his descendants, even to the tenth generation, may enter the assembly of the Lord.

No Ammonite or Moabite may enter the assembly of the Lord; none of their descendants, even to the tenth generation, may ever enter the assembly of the Lord,