12 Let there be a place outside the tent-circle to which you may go; 13 And have among your arms a spade; and when you have been to that place, let that which comes from you be covered up with earth: 14 For the Lord your God is walking among your tents, to keep you safe and to give up into your hands those who are fighting against you; then let your tents be holy, so that he may see no unclean thing among you, and be turned away from you.
Matthew Henry's Commentary on Deuteronomy 23:12-14
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.