Other religions sound good on the surface, but turn out to be impersonal systems based on grading what you 'do' to determine your worth. Christianity is the only religion that promises not a system but a personal God you have a relationship with. At its core, Christianity is a relationship with a God who is listening, responding, and interacting with those who love Him. That's how you prove it, Jen. You test Christianity's claims by testing out the relationship on which it's built.