I've been the recipient of some emails over the last few months from an individual going through mourning. This has brought her spiritual awareness to the forefront, yet she embraces Christianity as merely one of many "valid faith traditions."
What does Christianity have to say about it's exclusive claim to the truth? Indeed, what did Jesus and His followers say about Him? Here's a bunch of link for you to explore such questions:
7) The best one - http://members.aol.com/rbiblech