Mission, missions, missional, and all its linguistic variations are part of the expanding vocabulary and rhetoric of the contemporary Christian missionary enterprise. Its language and assumptions are deeply ingrained in the thought and speech of the church today. Christianity is a missionary religion and faithful churches are mission-minded. What's more, in telling the story of apostles and bishops and monks as missionaries, we think we have grasped the true thread of Christian history. But what about those odd shapes, those unsettling gaps and creases in the historical record? Is the...