In the not too distant future, and some would even argue now if you say you're a Christian you're going to need to be able to back that statement up. You're going to need to be able to explain, from scripture, why you believe the things you believe.  Along with explaining it, you're going to need to be able to actually live them out.  You know that crazy love for your enemies in Matthew chapter 5 He talks about? Yeah! Live that out.