Am I really a Christian? How do I know? Are they? What's the evidence? There are a lot of people out there that call themselves Christians...is that real? Who decides? In a community where even those who identify themselves as Christians can't always agree on what the Bible is, who Jesus is, or how we get to heaven - how can we know for sure what's what? While it can be confusing, Jesus clearly answers those questions as he wraps up his Sermon on the Mount.