Ernst Käsemann famously claimed that apocalyptic is the mother of Christian theology. J. Louis Martyn"s radical interpretation of the overarching significance of apocalyptic in Paul"s theology has pushed Käsemann"s claim further and deeper. Still, despite the recognition that apocalyptic is at the core of New Testament and Pauline theology, modern theology has often dismissed, domesticated, or demythologized early Christian apocalyptic. A renewed interest in taking apocalyptic seriously is one of the most exciting developments in recent theology. The essays in this volume, taking their point of departure from the work of Martyn (and Käsemann), wrestle critically with the promise (and possible peril) of the apocalyptic transformation of Christian theology. With original contributions from established scholars (including Beverly Gaventa, Stanley Hauerwas, Robert Jenson, Walter Lowe, Joseph Mangina, Christopher Morse, and Fleming Rutledge) as well as younger voices, this volume makes a substantial contribution to the discussion of apocalyptic and theology today. A unique feature of the book is a personal reflection on Ernst Käsemann by J. Louis Martyn himself.