If there be among you any man, that is not clean by reason of uncleanness that chanceth him by night, then shall he go abroad out of the camp, he shall not come within the camp:
Leviticus 15:16
'And when a man's seed of copulation goeth out from him, then he hath bathed with water all his flesh, and been unclean till the evening.
Numbers 5:2
'Command the sons of Israel, and they send out of the camp every leper, and every one with an issue, and every one defiled by a body;
Numbers 5:3
from male unto female ye do send out; unto the outside of the camp ye do send them; and they defile not their camps in the midst of which I do tabernacle.'
1 Corinthians 5:11-13
11
and now, I did write to you not to keep company with [him], if any one, being named a brother, may be a whoremonger, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner -- with such a one not even to eat together;
12
for what have I also those without to judge? those within do ye not judge?
13
and those without God doth judge; and put ye away the evil from among yourselves.