I got the Religion Category as a Top Category. I hope that helps. If you have any suggestions as a sub category for Religion please let me know.
Religion is a big enough topic to have its own category of its own. Why do so many people make it make it subcategories.
I made Religion a top category in my UK directory, but I consistently find that it gets very little attention, the least of all of my main categories. That may just be because the British are more secular.
You probably know about these already but here is a list of Religion Directories. There is also a large list of Christian directories.
I've always had a Religion category for all my directories http://www.mishre.com/Religion/ http://www.directorypro.biz/Society/Religion/ http://www.emporium-directory.com/Society_Culture/Religion/ http://www.up6.org/religion/ http://www.bidyourweb.com/Religion/ http://www.ibiddir.com/religion/ Check them out.