Malachi 2:6-9

ISV(i) 6 True teachings were in his mouth, and falsehood was not found on his lips. He walked with me peacefully and righteously, and he turned many from sin. 7 For the lips of a priest should preserve knowledge, and people should seek instruction from his mouth, because he’s the messenger of the LORD of the Heavenly Armies.
8 “But you priests turned aside from the way, and by your teaching you caused many to stumble. You have violated the covenant of Levi,” says the LORD of the Heavenly Armies. 9 “So I also made you despised, humiliating you before all of the people, because you aren’t following my ways and are showing partiality when you teach.”