Malachi 2:6-8

6True instruction was in his mouth and nothing false was found on his lips. He walked with me in peace and uprightness, and turned many from sin.

7“For the lips of a priest ought to preserve knowledge, because he is the messenger of the Lord Almighty and people seek instruction from his mouth.

8But you have turned from the way and by your teaching have caused many to stumble; you have violated the covenant with Levi,” says the Lord Almighty.