/shudder. That might explain why the Archons seem to be playing both sides of the field (if, like me, you buy into the idea that the Paragons and Archons are the same entities). That'd make for a pretty sick story, though - finding out that the whole basis of your belief in God is the disguised worship of Wyrmking Bahamut - and then you have fight him because Final Fantasy is all about defying religion. (Seriously. Just pick up a Final Fantasy and play until you see your first vaguely religious figure. That's the bad guy. AND DON'T CALL ME OUT WITH XII, WHICH ONLY DEFIES THE FF FORUMLA BY DIRECTLY MIRRORING STAR WARS.)
Anecdotal bullsh!t on that topic, a friend and I purchased XIII on the same date and played through the first few chapters simultaneously while joking around. I made a lot of off-handed comment that it followed the Final Fantasy Formula a little too rigidly and how I "couldn't wait to see the first religious guy." Needless to say, as soon as we saw Barthandalus, my first reaction was, "Holy sh!t, it's the f**king Pope! Never mind the bad guy, he's gotta be going for the freakin' apocalypse!" Aaaand then... *SPOILER ALERT* TA-DAAAAAA.