Malachi 2:6-8

6True instruction was in his mouth, and nothing wrong was found on his lips. He walked with me in peace and integrity and turned many from iniquity.

7For the lips of a priest should guard knowledge, and people should desire instruction from his mouth, because he is the messenger of the Lord of Armies.

8“You, on the other hand, have turned from the way. You have caused many to stumble by your instruction. You have violated the covenant of Levi,” says the Lord of Armies.