The church in Corinth seemed to have been quite diversified. We read of the rich and their lack of concern for the poor. The church was made up of the social elite, and people who had no status socially. Immorality was also a problem in the church at Corinth, and may have reached Paul's ears by the voice of the moral. Corinth, being a port city, was bustling with different cultures.
So, why do we feel the need to create churches which appeal to a particular group of people? What is our problem in the western world? I think that there could be a number of reasons, but the one thing that bound the Corinthian believers together, in spite of their schisms (they did continue to meet together), is the Gospel. Their differences were many, but the grace of salvation brought down to them by Jesus Christ was the same. They had different gifts, but the same God. The Gospel was the glue that created community as flawed as it was.
What's the problem here? Why are many churches lacking a diversified community? Again, I think there are a number of reasons, but off the top of my head I believe that:
1) with all our desire to reach people, we are attempting to do what we ought to be asking God to do. I'm all for trying to reach people, but God may want to reach them from my church, and not necessarily from a new one geared to the whims of those we want to reach.
2) I believe there is a poor to mediocre understanding of what the Gospel is and isn't. As much as the Gospel has come to the forefront in recent years, and has challenged a fundamentalism that is locked in legalism, we are all still learning. To be thoroughly gripped by grace is still yet another rung on the ladder.
Are we making the Gospel more complex than it really is? C.H. Spurgeon once commented that his theology can be summed up in four words, "Christ died for me." Do we really need more? Isn't this enough to create community within any church? Are we still doing what we've been doing for the last 50 years, but with a different approach? You know what I'm talking about. Going out and telling people that Christ died for them, but you'll have to also start thinking like me.