Jude tells them to "Hold On" to the simple gospel message.  He says that the sinful do "…ungodly deeds which they have ungodly committed."  Double trouble.   Then he lists what the sinful are like.

 In Jude 1:16-19  he lists a few of these ungodly persons:

1.  Murmurers
2.  Complainers
3.  Walking after their own lusts
4.  Boastful, speaking 'swelling' words
5.  Taking advantage.
6.  Mockers
7.  Sensual
8.  Not having the Spirit

What happened to drinkin', smokin', and dancin'?  Just when I think I'm doing pretty good in my walk with Christ, along comes Jude to cut me down.

I'm going to complain less, brag on myself less, etc. etc.  I certainly have some work to do.

You probably do to.  And it is all impossible without Christ.