Deuteronomy 23:1-6

1 HE that is wounded in the stones, or hath his privy member cut off, shall not enter into the congregation of the Lord. 2 A bastard shall not enter into the congregation of the Lord; even to his tenth generation shall he not enter into the congregation of the Lord. 3 An Ammonite or Moabite shall not enter into the congregation of the Lord; even to their tenth generation shall they not enter into the congregation of the Lord for ever: 4 Because they met you not with bread and with water in the way, when ye came forth out of Egypt; and because they hired against thee Balaam the son of Beor of Pethor of Mesopotamia, to curse thee. 5 Nevertheless the Lord thy God would not hearken unto Balaam; but the Lord thy God turned the curse into a blessing unto thee, because the Lord thy God loved thee. 6 Thou shalt not seek their peace nor their prosperity all thy days for ever.