Jude 1:9-10

9Even the leader of God's angels, Michael, did not speak bad words like that against the Devil. Long ago, Michael argued with the Devil about who should have Moses' dead body. But even when the Devil said bad words against God, Michael himself did not speak against the Devil. He did not think that he should do that. Instead, Michael said, ‘The Lord himself will show that you are wrong.’

10But these false teachers speak bad things against anything that they do not understand. They are like animals that cannot think properly. They just do the things that their nature causes them to do. Those are the things that are destroying them.