From "Barclay Press Wess:" (You can link to his full blog entry on the right)
Jeremiah 29:7, “But seek the welfare of the city where I have sent you into exile, and pray to the LORD on its behalf, for in its welfare you will find your welfare.”
When this was written, the Hebrew people were living in exile under the Babylonian empire, yet God called them to live in such a way that the very neighborhoods and cities would be better because of them living there. The church as an exiled people always rubs up against the powers of the world, yet it doesn't retreat from it, it constantly seeks the peace of the kingdom within those places.
What do you think? How do we seek the welfare of those "cities" whose values differ from our own? What does this mean?