More than one person has joked over the years that Evangelical believers do not have an ecclesiology. In one sense, that is absurd: Evangelical churches (especially if you include Pentecostals in that group) are some of the fastest-growing, most vibrant churches in the world. Evangelicals are proclaiming the gospel, praising the Lord, reading the Bible, and loving the poor. But there is a case to be made that the Evangelical devotion to the mission of the church has left Evangelicals with little time to reflect on the church itself. In this collection of essays, first given at annual meetings of the Evangelical Theological Society, the authors take time to reflect on the nature of the church in an Evangelical context, asking after the way in which it is one, holy, catholic, and apostolic.