And that ye may put difference between holy and unholy, and between unclean and clean;
And that ye may teach the children of Israel all the statutes which the LORD hath spoken unto them by the hand of Moses.
They shall teach Jacob thy judgments, and Israel thy law: they shall put incense before thee, and whole burnt sacrifice upon thine altar.
For the priest's lips should keep knowledge, and they should seek the law at his mouth: for he is the messenger of the LORD of hosts.