Jude 1:4

1:4 For certain men have secretly slipped in among you – men who long ago were marked out for the condemnation I am about to describe – ungodly men who have turned the grace of our God into a license for evil and who deny our only Master and Lord, Jesus Christ.

Jude 1:10-12

1:10 But these men do not understand the things they slander, and they are being destroyed by the very things that, like irrational animals, they instinctively comprehend. 1:11 Woe to them! For they have traveled down Cain’s path, and because of greed have abandoned themselves to Balaam’s error; hence, they will certainly perish in Korah’s rebellion. 1:12 These men are dangerous reefs at your love feasts, feasting without reverence, feeding only themselves. They are waterless clouds, carried along by the winds; autumn trees without fruit – twice dead, uprooted;