Treasury of Scripture Knowledge
And that you may put difference between holy and unholy, and between unclean and clean;
They shall teach Jacob your judgments, and Israel your law: they shall put incense before you, and whole burnt sacrifice upon your altar.
And they shall teach my people the difference between the holy and the common, and cause them to discern between the unclean and the clean.
For the priest's lips should preserve knowledge, and they should seek the law from his mouth: for he is the messenger of the LORD of hosts.
Holding fast the faithful word as he has been taught, that he may be able by sound doctrine both to exhort and to refute the opposition.