10 If there be with thee a man that is not clean from what hath happened in the night, then shall he go outside the camp; he shall not come inside the camp;

Matthew Henry's Commentary on Deuteronomy 23:10

Commentary on Deuteronomy 23:9-14

(Read Deuteronomy 23:9-14)

The camp of the Lord must have nothing offensive in it. If there must be this care taken to preserve the body clean, much more should we be careful to keep the mind pure.