When it comes to sex and drugs, these four epistles are pretty tame. They do mention lust, passion, and sexy times in general, but only to say that people definitely should not be doing this naughty stuff. The same goes for drinking—partying' til you puke is a no go. We're gonna guess that these three guys would want you to just say no to drugs, too.
These letters don't have any explicit violence, but they do include some pretty frank talk about the end of the world that might keep you up at night. The blackest corners of Hell. The Earth engulfed in flames. That kinds of stuff.