But the man that shall be unclean, and shall not purify himself, that soul shall be cut off from among the congregation, because he hath defiled the sanctuary of the LORD: the water of separation hath not been sprinkled upon him; he is unclean.
Anyone who is impure and doesn't cleanse themselves will be removed from the group. They have polluted the Lord's holy place, and they haven't used the purifying water; they remain unclean.