it would require some massive changes in the way we understand reality.
God could not be all-powerful or all-knowing or all-present.
How else could He be fooled by an angel that He created and WHY else would He allow one of the fallen angels to be free of the chains of darkness?
But I suppose that in this movie there weren't chains of darkness, but only the abyss (which doesn't come until the end of history).
He would also have to allow angels the ability to create and procreate also, which they don't. But, thank God there aren't any ghouls in our world.
Then there's the obvious conceptually contradictory (to the Bible) notions of limbo, vampires, Catholic beliefs being superior to protestant ones (because throughout this movie Catholicism IS and somehow protestantism not only doesn't exist, but the rationale of it isn't even present... which I suppose is required for much of the other misconceptions in the movie to be presented as deceptively plausible.
But the succubus was just lame. Succubi were the mythical female angels which were the counterparts of Incubi (singular Incubus). It's been my understanding (which I only hold to loosely) that succubi were attractive females which had sexual relations with men as incubi had sexual relations with women. So shouldn't she have been more attractive? And what was with the stupid time taking dance moves? You think she might have succeeded if she didn't have to first move like an idiot?
This movie has SO many more errors (and Biblical misconceptions and deceptions and outright lies), but I just don't have time to watch this whole movie and write out a whole commentary addressing all of them.
Oh yeah, I think this last one is important. There is no "necronomicon" - thank God. That is, there's no "book of the dead", but only a book of life. Why would fallen angels follow rules anyway?