Malachi 2:4-8
2:4 Then you will know that I sent this commandment to you so that my covenant may continue to be with Levi,” says the Lord who rules over all.
2:5 “My covenant with him was designed to bring life and peace. I gave its statutes to him to fill him with awe, and he indeed revered me and stood in awe before me.
2:6 He taught what was true; sinful words were not found on his lips. He walked with me in peace and integrity, and he turned many people away from sin.
2:7 For the lips of a priest should preserve knowledge of sacred things, and people should seek instruction from him because he is the messenger of the Lord who rules over all.
2:8 You, however, have turned from the way. You have caused many to violate the law; you have corrupted the covenant with Levi,” says the Lord who rules over all.