And Moses said unto his father-in-law, Because the people come unto me to inquire of God:
Command the children of Israel, that they put out of the camp every leper, and every one that hath an issue, and whosoever is unclean by the dead:
He that toucheth the dead body of any man shall be unclean seven days:
the same shall purify himself therewith on the third day, and on the seventh day he shall be clean: but if he purify not himself the third day, then the seventh day he shall not be clean.