Supernatural - end of season 4

I waited so long for any TV series to bring the Old Testment angels (the angry, fierce and bloodthirsty ones) that I couldn't believe in the nice work done by the SN crew.
This post has spoilers... so... take your chance.

The possession of Jimmy by Castiel was a nice episode too, revealing that He really works in mysterious ways. I keep thinking that, although all mighty and wishing for peace, after Armaggedon, Zacharias and the other angels are as rebellious as Lucifer himself, and should be punished accordingly. But as Zach said, "God has left the building"... sounds sad.And everyone knew thar nothing good could come from demon blood. Although Sam was able to destroy the demons souls and so on, power corrupts (imagine what a corrupt power could do). Sam was so convinced that he was the take to finish the job that was easily dragged into the devil's trap, leading us to the final and most challenging season of Supernatural, as Lucifer is among us again and Hell will, once again, brake loose.Let's pray that Dean, destined to finish the mess he started, digs that knife in the fallen heart.