User blog comment:EmpyreanSmoke/Supernatural Q&A/@comment-3976024-20150913082216/@comment-24834479-20150913210102

1. With archangels, holy fire just destroys their vessels (similar to Lot's salt). When Castiel used it against Michael, Adam's body was destroyed, and so Michael had to rebuild it. This is also true for Lucifer, as well as the other archangels.

2. Simple, because God likes Castiel. Cas defends his favorite creations, even against his own family, and God admires that about him.

3. That's a good question. I think that God ressurected Jimmy the first time, because he had no reason not to. The second time, he figured that Jimmy had been through enough, and deserved to be at rest.

4. Death was not the one who gave Alastair the scythe. He was just saying that so the boys knew who's scythe it actually was. One of the 66 seals was to kill two reapers, and since back then they didn't know that reapers were Angels, and could therefore be killed by their blades, they needed to find a weapon that they knew could kill them. Hell probably spent a long time searching for that scythe. Hope that helps.

5. I think that the first blade is powerful enough to break the connection between the spirit and the earth. I'm not so sure about the colt, however.

6. I believe that there are cures that can be administered at anytime, but people just don't know what they are. For instance, hunters have only found a cure that works before the vampire feeds, but there is another, more powerful cure which no one has figured out, that can cure them after they feed.