How can the church become reinvigorated by its missionary identity? Exploring how some congregations have drifted from Newbigin's seminal ecclesiology, Michael Goheen and Timothy Sheridan dissect three contemporary movements—missional, emergent, and center—spotlighting strengths and weaknesses. Offering a gentle corrective, the authors share whole-Bible principles to help churches re-tether themselves to their divine purpose and successfully engage with culture.