I think this is not really a portrait. When you do a portrait shot you have to capture the essence of a person - capturing only a hand is not enough. But that's something one could argue about ;) Your shot is well executed, the reflections are cool.
The reflection really makes this image! That beautiful subtle blue glow is perfect! I hope you don't get hit too hard for being slightly less litteral about the challenge, but I've never been one to adhere to stict rules myself. Lovely image! 8o)
Positives: Tones, color, concept
Negatives: a touch overexposed, doesn't exactly reveal a human in portraiture.
Overall: Nice idea, well executed, should finish in middle of the pack, the reflection is coolest part...
I like the reflections. If you hadn't put faith in the title, this could have been hand of ... insert word here. the addition of something else to strengthen the concept of faith would have been more powerful (rosary beads, bible, etc)