What is the Church's Job and What is the Individual Christian's Job?

As I said in my last post, I'm reading an excellent book by David van Drunen. I felt I had to get on tip of this Two Kingdom thing to really understand what the emergents and others (NAR too?) are thinking and doing with their "we will bring God's Kingdom on earth through infiltrating the culture" doctrine. In my current issue of Modern Reformation magazine (September/October issue), guess who wrote one of the articles? Yes, van Drunen. Here are some great quotes from this article, entitled "The Vocations of Christians and the Ministry of the Church." He writes,

Churches [devoted to Reformational Christianity] know that they must, for example, , call worship services and proclaim the gospel. But how much more should they do? It is good for Christians to stay in shape, so should the church sponsor aerobics classes?

Before this he writes,

Christians seem to know instinctively that it's rather silly to claim that weeding one's backyard is the work fo the church, but it is not at all easy to explain exactly where the church's work ends and the individual believer's work --simply as an individual believer--begins.

His point, made quite well in the article, is this, Individuals are free to start aerobics classes, begin foundations for social justice causes, participate in political causes and so forth. But when it comes to the church, there are simply no Scriptural mandates for that institution to do this. Yes, pastors and teachers certainly can teach from the Bible where it talks about your body as a temple of the Holy Spirit and helping the poor. But it's individual Christians who are to carry this out in the culture, not for the church to do it. I think from this article and what I've read in his book so far, he is going toward the idea of Christians changing society by just being in it and doing their vocations and avocations. This is in contrast to the church doing these things, which he says, historically the church has been very mediocre at most of these things because church leaders just do not have the expertise in all of these areas either to do it themselves or to know if their members are doing them correctly.

It seems to me that this is the BIG question that will be asked in the coming years as the younger evangelical seems to think the church should be changing the culture. This is really funny in a way as they seem to really not like the Christian Right and how they tried to change the culture of [liberal] politics. But they don't seem to see that they are doing exactly the very same things.