I don't think the show has thought it through that far. They'll bring back anyone they feel like bringing back, though thankfully demons haven't been part of that (we'll see where this purgatory thing goes.) My feeling is that they had the vague idea that if demons could bring humans back to life, so could angels, and since angels were created by God, if he felt like bringing them back he could do so.
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timeasmymeasure
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Date: 2011-04-10 11:10 pm (UTC)