"that you may distinguish between holy and unholy, and between unclean and clean,

"and that you may teach the children of Israel all the statutes which the LORD has spoken to them by the hand of Moses."

They shall teach Jacob Your judgments, And Israel Your law. They shall put incense before You, And a whole burnt sacrifice on Your altar.

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

"In controversy they shall stand as judges, [and] judge it according to My judgments. They shall keep My laws and My statutes in all My appointed meetings, and they shall hallow My Sabbaths.

"For the lips of a priest should keep knowledge, And [people] 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 convict those who contradict.