If you were to summarize all of Jesus' teaching and mission down to one single statement it would be, "Repent, for the Kingdom of Heaven is at hand." At its core, this word "Repent" means to think differently, to challenge and reorder how we think about the current world. In short, Jesus came declaring that a new world is breaking through, right here and now, and it is available to us all. The Sermon on the Mount is Jesus' manifesto of how we live now into this new Gospel reality.