User blog comment:Krable/Could it be possible that Meg with some other demons ressurected Castiel?/@comment-124.188.181.13-20120315044535/@comment-3481504-20120315135050

Well, resurrection is not that easy, it's only easy for God, Death, and Archangels, that's it.

With that, Balthazar couldn't just simply resurrect his pal Cas, besides he didn't seem at all powerful.