Religious References?

In horror movies there are a ton of religious references most famosly from: The Exosist, The Omen and The Unborn.

I think that adding  religious references into a horror movies could add a uniqe type of fear for people as some people fear religion as it is believed to be powerful and scraed, Also many people fear what lays on after the Grave.

It may seem a little silly but seeing the sucsess of The Exosist which in many polls has been rated as the most scary movie of all time.