The following is quote from a Perspective class I am taking:
When the church is isolated from society, or is seen as foreign, it cannot transform society and is in danger of elimination.
I first took this course in college in 1998. Looking back I now see how God used it to shape so much of my pastoral ministry here in the U.S. My wife and I had planned to be overseas missionaries. That has not yet come to be. God has, however, used us as missionaries here in the U.S. As our culture becomes increasingly unchurched churches seem to be struggling ever more with growth and how to effectively reach the lost.
As organizations grow older, it is natural for them to become inwardly focused and insular. The majority of my ministry life has been either in church planting or helping churches to view their own communities as a foreign mission field and become engaged with the culture around them.
For though I am free from all, I have made myself a servant to all, that I might win more of them. To the Jews I became as a Jew, in order to win Jews. To those under the law I became as one under the law (though not being myself under the law) that I might win those under the law. To those outside the law I became as one outside the law (not being outside the law of God but under the law of Christ) that I might win those outside the law. To the weak I became weak, that I might win the weak. I have become all things to all people, that by all means I might save some. I do it all for the sake of the gospel, that I may share with them in its blessings.
1 Corinthians 9:19-23