TSK · Leviticus 14:57

And that ye may put difference between holy and unholy, and between unclean and clean;

Take heed in the plague of leprosy, that thou observe diligently, and do according to all that the priests the Levites shall teach you: as I commanded them, [so] ye shall observe to do.

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