Azazel's Plot

I think now, that things make sense a little more. I think Azazel was looking for the special child and it was Sam. Here's how Azazel found out that it was Sam. I think in Croatoan he had Sam see that vision, so he would go to the town. They wanted to see if he was immune to the demon virus or whatever it was. Sam did not turn evil. I think that was one of the most important episodes. I now think that in "Born Under A Bad Sign" that Meg's demon, purposely possessed Sam, to see if Dean would kill his own brother. Also, why did the demon have to have that symbol on Sam's arm to stay in him. Maybe that was the only way Sam could ever be possessed. I think the whole demon army stuff was crap. Azazel didn't want anyone to lead his demon army. I think that was all a setup to have Sam killed and for Dean to make a deal, so the demons could get Dean's soul. Papa Winchester was not breaking in hell, so they had to see if Dean would, so he could break the first seal. They needed Sam to break the last, so they didn't want him in hell.
Also where did Sam's soul go when he died. Did the angels who wanted the apocalypse bring Sam back to life? Did Sam have a choice? Why didn't we see Sam with a reaper or anything? I'm hoping that these questions will ever get answered. I also wonder if Sam didn't die. I still think that. Maybe Sam was able to heal himself or choose to go back in his body and heal himself. Or the angels who wanted the apocalypse, healed Sam and brought him back to life. Maybe, Sam was being watched over by an archangel, just like Chuck the prophet was. If they could bring Chuck back to life, who's to say they couldn't bring Sammy back to life too.
Azazel had to have been plotting with the angels who wanted the apocalypse. That's just my theory. I still think Lilith was working with them.

Also I still think Sam is going to be the one who sends Lucifer back to hell. I think Dean is going to have to be willing to sacrifice Sam and let him go and that's how he'll stop the apocalypse. I don't know how Castiel figures into anything, but I'll have to wait and see what goes on.