What is a church? What makes a church a church? What is necessary to have a church? Is membership in a local church really that important? Might a group of people who claim to be Christians become so unlike what a church should be that they should no longer be called a church? Why are there so many churches of different traditions? What is tradition? Are the historical traditions of the church still relevant today? These and many others are questions related to the life and purpose of the church, which every Christian must wrestle with not only for themselves, as disciples of Jesus, but also...