Malachi’s words for Old Testament priests could very well be a warning for modern preachers who talk more about pop psychology and prosperity gospel more than the Word of God:
“For the lips of a priest should guard knowledge, and people should seek instruction from his mouth, because he is the messenger of the LORD of Hosts.
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 Hosts. “So I in turn have made you despised and humiliated before all the people because you are not keeping My ways but are showing partiality in your instruction.” (Malachi 2:7-9)