[ His skepticism sounds familiar, and she can't blame him for it. Anyone would be skeptical if two representatives of two religions started waving holy texts at them, professing to be right because their own book told them so. ]

If you don't choose a side, it becomes very difficult to fight... to defend yourself. It will also mean that no one will listen to you.

[ No power and no voice. She's sure there are some people willing to live that way in the name of peace. ]

That's just the reality of how this world works. Not everyone chooses a side because they believe strongly at first, but they still find reasons to choose.