'Clean' in the Bible

her priests do violence to my law, and profane my holy things: they put no difference between the holy and profane, neither do they make known the difference between the unclean and the clean, and they hide their eyes from my sabbaths, and I am profaned among them.

And I will sprinkle clean water upon you, and ye shall be clean: from all your uncleannesses and from all your idols will I cleanse you.

And they shall teach my people the difference between holy and profane, and cause them to discern between unclean and clean.