
Dietrich Bonhoeffer in his book Life Together argued that a community, rather than an isolated individual, added strength and objectivity to preaching the Word. Additionally, Bonhoeffer claimed the Christian life can never be lived in the abstract. The expression of a believer's faith itself called for community living and sensitivity to one another.
This just happens to be the way that God goes about making a Kingdom... pulling all sorts and conditions of people together and then patiently and graciously making something of us.
The church is not a natural community composed of people with common interests; it is a supernatural community. And the super in that word doesn't mean it exceeds our expectations; it is other than our expectations, and much of the other is invisible to us as yet.