SCM Veritas engages in critical and original questions of pressing concern to both philosophers and theologians. The major concern of all books in this series is to display a rigorous theological critique of categories not often thought to be theological in character, such as phenomenology or metaphysics. Karl Barth and Martin Heidegger are doubtless two of the most important and influential thinkers of the 20th century. This book investigates how the question of being developed through their respective accounts of protestant theology. Whereas Heidegger suggested a post-onto-theological pathway, Barth inverted the question of being in a thoroughgoing theological ontology. In the end, both reconfigured the relationship between philosophy and theology in ways that continue to shape contemporary debate.