There is a lot of talk among churches as being 'relevant'. I urge you to go beyond being 'relevant to our culture' to seeking to transform the city you live in. At Kaleo Church we see the gospel story as a salvational message, means for ongoing grace renewal by God and the announcement of God's Kingdom on earth. We must see the good news as a call to bring shalom in our cities and be a city within a city that is a foretaste of the eternal Kingdom to come. Here are a few resources that have been suggested to us:
The Missional Leader: Equipping Your Church to Reach a Changing World
To Live in Peace: Biblical Faith and the Changing Inner City
Communities First (including a theology of development)
Asset Based Community Development (pdf) ABCD Institute website