"I am an Angel of the Lord"

My wonderful show started back up last week and it has been amazing so far.  But I have to say that one of the best parts is that I have a date every Thursday with Kristen.  We watch the episode of Supernatural while chatting online and then we call and talk about it after.  It has been pretty amazing thus far and it helps to keep something of our old relationship.  I miss having her on my couch watching some nerdy TV show.  Hell, I miss knowing that she is somewhere on campus or in the same state as me.  Supernatural has become a balm to my aches of missing her.

So I need some help.  I know absolutely nothing about the bible, and well, Supernatural has taken a biblical turn.  Does anyone know anything about Revelations?  If this had to do with the run of the mill myths and lore as usual than I would be fine, but no, now they want to branch out and throw in some good southern-bible-thumping-apocalypse-prophecy stuff and I am found to be at a loss.  I hope that I am going to enjoy this new turn of events.  Last week I had my doubts, but this week redeemed itself a little.  

So anyone know anything about the end of world?