The local church is meant to embody the vibrant diversity of the global church, transcending racial, cultural, and economic boundaries. Yet local churches too often simply reflect the same societal divisions prevalent in our world today—making them more akin to social clubs filled with like-minded people than the supernatural community the New Testament prescribes. Pastors Mark Dever and Jamie Dunlop argue that authentic fellowship is made up of two crucial ingredients: commitment (depth) and diversity (breadth). Theologically rooted yet extremely practical, this book sets forth basic principles that will help pastors guide their churches toward the compelling community that we all long for.