May I draw your attention to Cas/God for reference, so that you can prepare yourself? I mean, Cas spent a season looking for dear old dad, lost faith, got resurrected a bunch of times, blah blah blah...they write God into the actual narrative and Cas has Not. A. Single. Scene. with his father. I think they didn't even exchange a single word. Like, really? REALLY?
Well, shit. I'm going to drive around the province like an idiot, looking for this. Heh. :D