Catholic Christianity at the end of the Middle Ages was not at all a uniformly 'decadent' or corrupt institution: it showed clear signs of cultural vigour and inventiveness. However, it was vulnerable to a particular kind of criticism, if ever its claims to mediate the grace of God to believers were challenged. Martin Luther proposed a radically new insight into how God forgives human sin. In this new theological vision, rituals did not 'purify' people; priests did not need to be set apart from the ordinary community; the church needed no longer to be an international body.

For a critical 'Reformation moment', this idea caught fire in the spiritual, political, and community life of much of Europe. Lay people seized hold of the instruments of spiritual authority, and transformed religion into something simpler, more local, more rooted in their own community. So were born the many cultures, liturgies, musical traditions and prayer lives of the countries of Protestant Europe.

This new edition embraces and responds to developments in scholarship over the past twenty years. Substantially re-written and updated, with both a thorough revision of the text and fully updated references and bibliography, it nevertheless preserves the distinctive features of the original, including its clearly thought-out integration of theological ideas and political cultures, helping to bridge the gap between theological and social history, and the use of helpful charts and tables that made the original so easy to use.