Deuteronomy 23:10
If there is among you any man who is unclean because of a nocturnal emission he must go outside the camp. He may not reenter the camp.
Leviticus 15:16
If a man has an emission of semen, he must bathe his whole body. He will be unclean until evening.
Numbers 5:2-3
Command the Israelites to send outside the camp anyone who has a serious skin disease or a discharge or anyone who is unclean from touching a dead body.
1 Corinthians 5:11-13
I wrote you not to keep company with any man who is called a brother who is a fornicator, or who is greedy, or who worships idols, or constantly gets drunk, or cheats people. Do not even eat with such a person.