Thematic Bible: Speaking evil of, forbidden

Yet in just the same way these dreamers also defile the flesh, while they set at naught dominion and scoff at dignities. But Michael, the Archangel, when in contending with the devil, he was disputing about the body of Moses, did not dare to pronounce sentence for blasphemy, but said, "The Lord rebuke you." Yet these men blaspheme about matters of which they know nothing, while they use such things as they do understand by instinct (like the animals who have no reason) for their own destruction.