There's a whole ebook about why we exist.
Tim Keller is the founding pastor of Redeemer Presbyterian Church and a New York Times bestselling author. In 2001, he started Redeemer City to City which has helped start over 381 churches in 54 cities. We'll send you a free ebook from Tim Keller that talks about why cities, why churches, and how global cities can be renewed.
There's more where that came from. Check out Tim Keller's blog.