Malachi 2:7-9

For the lips of a priest should guard knowledge, and people should seek instruction from his mouth, for he is the messenger of the LORD of hosts. But you have turned aside from the way. You have caused many to stumble by your instruction. You have corrupted the covenant of Levi, says the LORD of hosts, and so I make you despised and abased before all the people, inasmuch as you do not keep my ways but show partiality in your instruction.”