your faith doesnt depend on 1 book and a movie, your faith should depend on what you have within, having read the book, i could say that there are a few errors though some may be true or parallel to what we believe in, however the bottomline is how deep your faith and how you trust in him that matters, no author, book nor movie could or must rattle your belief in God and his only son jesus christ.
let us not forget that he died on the cross for us all=)
words of caution to the youth who might be able to catch the film or read the book, what you are about too read or see is fiction, if after watching the film and doubts surfaces, just answer this question, did in one way God doubted you?=)