Robert Warren suggests that a church ought to be "a living demonstration and 'pilot project' of the kingdom of God ("The Healthy Churches Handbook" p. 36). He is talking about how we are signposts of and to the kingdom. I really like that idea of being a kingdom 'pilot project'. It is challenging but also stacked with possibility. It is a reminder that God uses us and, at the same time, a real challenge to be an effective church demonstrating and practicing kingdom values.