Theologians like to make up words — or use old words differently. Some folks call these "neologisms" (how's that for a word?). Every once in a while one of those words catches on, goes viral, and makes a difference. The word "missional" is one of those. It's spreading through the church, with impact. Books written (Missional Church; Cultivating Missional Communities; A New Missional Era; The Missional Church in Perspective), conferences had, websites put up, and blog articles written. Over the course of about 20 years the word has become a part of church culture, at least among "mainline" (or "oldline") Protestants. Alongside this word "missional," another term has also arisen, and that's "emergent." Coming from different sides of Protestant life — "missional" coming out of the mainline and "emergent" coming out of Evangelical churches — the two terms try to describe a singular phenomenon facing...