Staging for the first time in extant scholarship a rigorous encounter between German thought from Kant to Marx and new forms of political theology, this ground-breaking volume puts forward a distinct and powerful framework for understanding the continuing relevance of political theology today as well as the conceptual and genealogical importance of German Idealism for its present and future. Against traditional approaches that view German Idealism as essentially a secularizing movement, this volume approaches it as the first speculative articulation of the political-theological problematic in the aftermath of the Enlightenment and the advent of secularity. Via a set of innovative readings and critiques, the volume investigates anew such concepts as immanence, utopia, sovereignty, mediation, indifference, the earth, the absolute, or the world, bringing German Idealism and Romanticism into dialogue with contemporary investigations of the (Christian-)modern forms of transcendence, domination, exclusion, and world-justification. Over the course of the volume, post-Kantian German thought emerges as a crucial phase in the genealogy of political theology and an important point of reference for the ongoing reassessment of modernity and secularity. As a result, this volume not only rethinks the philosophical trajectory of German Idealism and its aftermath from a political-theological perspective, but also demonstrates what can be done with (or against) German Idealism using the conceptual resources of political theology today.