In the year 2007, the number of people living in the cities of the world--finally and irreversibly--exceeded the number of people living in rural areas. The earth's population is now more urban than rural, and Christian leaders are trying to figure out what this means for the church. Pastors and kingdom-minded leaders know they need to engage the surrounding community with the gospel but are unsure about how to do so. Ministering in diverse and populous areas brings a unique set of challenges and promises. Evangelistic strategies that work in rural areas seem to bounce off of people in the...