There is something healthy about returning to one’s roots. When it comes to evangelical Christianity, its roots are found in the soil of the sixteenth-century Protestant Reformation. Just as the Reformers protested the corrupt teaching of the Roman Catholic Church, so today evangelicalism itself is in need of a modern reformation. In What Is Reformed Theology?, Dr. R.C. Sproul offers a comprehensive introduction to Reformed theology. Simply put, it is the theology of the Protestant Reformers and the heart of historical evangelicalism. As C.H. Spurgeon once said, Reformed theology is nothing other than biblical Christianity.