More than half the world now lives in towns and cities, which is the largest wave of urban growth in history. This unprecedented growth of urban centers poses perhaps the single greatest frontier for the church in the twenty-first century. How do we know if we are fulfilling our mission? What are we actually attempting to accomplish? What is at stake? Thriving City Blocks is an interactive journal—a call-to thoughtful action among followers of Jesus and people of all stripes, to better understand how to love our neighbors well.