Deuteronomy 23:5-10

5But the Lord your God refused to listen to Balaam. He turned the intended curse into a blessing because the Lord your God loves you.

6As long as you live, you must never promote the welfare and prosperity of the Ammonites or Moabites.

7“Do not detest the Edomites or the Egyptians, because the Edomites are your relatives and you lived as foreigners among the Egyptians.

8The third generation of Edomites and Egyptians may enter the assembly of the Lord.

9“When you go to war against your enemies, be sure to stay away from anything that is impure.

10“Any man who becomes ceremonially defiled because of a nocturnal emission must leave the camp and stay away all day.