and that ye may make a distinction between the holy and the common, and between the unclean and the clean;and that ye may teach the children of Israel all the statutes which Jehovah hath spoken unto them by Moses.They shall teach Jacob thine ordinances, And Israel thy law: They shall put incense before thee, And whole burnt-offering 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 Jehovah of hosts.