The vision of the Christian Church is to establish an ancient dream in a modern world. Jesus said "Upon this rock, I will build my church."
Two thousand years later, we cannot even agree on the shape of the edifice that was supposed to go on that rock. Will it have stained glass windows and arches? Will it be a plain wooden box? Will it even have walls? There has never been a definitive answer to that question. We can only speak of a variety of answers--thousands of permutations and designs.
I believe there are four basic church shapes, based upon the intentions of the people who dwell in them. The true church lies somewhere in between these four shapes.
These shapes are a continuum between two intersecting axes--the cultural and missional axis. The cultural axis is how they see themselves. The missional axis is how they see their mission to the world. They represent four separate visions of the church's place in society.