Kenneth G. Appold is the James Hastings Nichols Associate Professor of Reformation History at Princeton Theological Seminary. He is the author of two books on early Lutheranism and numerous articles on a variety of historical and theological topics.

"Appold has presented us with an introduction to Reformation history that is brief, clear, up-to-date, and blessedly free of exaggerations.... Those who take up Reformation history today should begin here." (Tom A Brady, Jr., University of California, Berkley, 1 January 2013)"Anyone interested in a brief history of Reformation theology would do well to read this book first to review the historical context of the debates surrounding [it] ... I was sorry when it came to an end. Fascinated by the brief historical account it offered, I was left wanting more. I highly recommend it." (Theology Today, 19 September 2012)"This engaging book provides a fairly thorough synthesis of much of the historical writing on this period." (Theology, 1 July 2012)"A history of the reformation, even 'a brief history' in two hundred pages? In fact, because too much detail is impossible the author turns this to advantage and is able to stand back slightly and give an overview ... A highlight is Appold's description of the indulgence controversy – the clearest and most concise I have ever read ... 'Does exactly what it says on the tin' has become rather a cliché, but a 'brief history' of the reformation is exactly what Appold provides." (Evangelical Quarterly, 2 April 2012)"Historian Appold (Princeton Theological Seminary) offers a clearly written overview of Christianity in the Reformation era that frames 16th-century events as outgrowths of a centuries-old reforming impulse, rather than a sudden religious convulsion.... The book is unique in providing an extended discussion of the spread of Lutheranism to Scandinavia, filling in a notable gap in many accounts of the Reformation, but this comes at the expense of reforms in the British Isles.... Summing Up: Recommended. Undergraduate collections." (Choice, 1 November 2011)"Anyone interested in a brief history of Reformation theology would do well to read this book first to review the historical context of the debates surrounding [it] ... I was sorry when it came to an end. Fascinated by the brief historical account it offered, I was left wanting more. I highly recommend it." (Theology Today)

• Preface. 1 The Different Paths of Medieval Christianization.2 The Luther Phenomenon.3 Reformation Reforms.4 The Reformation’s Establishment.Epilogue: The Reformation’s Legacy.Index.