Mythology and novels

Several years ago (in the wilds of 2005) I turned a poem into the start of a novel. The result was Waking The Dead, which was about the dead waking, gods, mythology, and other things. One of the reasons I began it was to make use of a mythology -- in this case a blend of Sumerian and Haitian -- that wasn't common in modern urban fantasy. Generally without exception the cosmology is either:
A) Christian
B) Native American
C) Ireland/Fae/what have you
D) Japanese of late

And it bugged me that some of those were taken as flat out 'this is the order of things'. So I did Waking The Dead, and decided to avoid making use of any Big/Trendy mythology as the way of things in any future novel.

That was then. This, however, is now. And 20K into one novel, the plot of another -- one involving angels, demons, and a passage from Genesis -- is saying hello and refusing to shut up. Mind you, my take on all of it is decidedly somewhere left of normal, but it is still a very odd thing. And shall be interesting to see what comes of it.

On Exorcisms

A senior priest in Florence is under investigation for fraud after allegedly amassing £3 million by performing fake exorcisms.

Prosecutors said that Father Francesco Saverio Bazzoffi would "stage shows" at the House of the Sainted Archangels, an organisation he founded.

During the events, which regularly attracted crowds of over 400 people, a number of associates would "pretend to be possessed by demons" and Fr Bazzoffi would allegedly exorcise them using ancient and obscure rites

... Fr Bazzoffi denies that he had "ever practised" exorcisms and admitted that he did not have a licence.

I want one of those licences. And to pull it out at the most opportune times. Or, say, for real fun:

"Come now! Your daughter is not having a seizure, she is POSSESSED!" *whips out card* "For 5 easy payments of $99.95, I can cure...."