Book excerpt: The Encyclopedia of Martin Luther and the Reformation is a comprehensive global study of the life and work of Martin Luther and the movements that followed him—in history and through today. Organized by a stellar advisory board of Luther and Reformation scholars, the encyclopedia features nearly five hundred entries that examine Luther’s life and impact worldwide. The two-volume set provides overviews of basics such as the 95 Theses as well as more complex topics such as reformational distinctions. Entries explore Luther’s contributions to theology, sacraments, his influence on the church and contemporaries, his character, and more. The work also discusses Luther’s controversies and topics such as gender, sexuality, and race. Publishing at the five hundredth anniversary of the Reformation, this is an essential reference work for understanding the Reformation and its legacy today.