To this day I wonder if the main character was sucked into another dimension or if he was in a coma. 
Apparently the author was not allowed to use the ending he originally wanted to. I found that interesting.
Maybe that is why it is left to the imagination! I always wanted to see a movie made. The ideas in the story are so original and beautiful. I never thought I would enjoy religion and politics so much haha. But I have read the book like 3 times already 
Have you given any thought to reading other religious or political books after this one?
It is fantasy and the religion is made up and the politics are far fetch'd. So yes and no. If it is something crazy and made up, YES. If it is just about stuff going on in the real world or history, probably not
Have you ever read the classic Chronicles of Narnia books. They have a religious thread through them but are complete fantasy.
I have not! I have seen the original cartoon of the Lion the Witch and the Wardrobe, and saw 2 of the newer movies of the series. I didn't even realize they were books until recently, and I have not had time yet. Are the books and movies very different?
As with all books and movies, the movies can't fit everything in so unfortunately they sometimes don't stick closely to the plot. I would recommend reading them.
I will definitely check them out! I didn't even know I liked fantasy books until I found Song of Fire. 
Joseph Bentz has done a few novels on a variety of themes but his book "A Son Comes Home" seems to echo similar themes to "Song of Fire", maybe that's another one you could check out.
My to be read list is getting so long! Thanks. I am usually into romance novels, but maybe fantasy is my new thing haha. I love the idea of magic, or fantasy things that could never happen in real life!