Designed as a textbook for use in courses on natural theology and used by Immanuel Kant to compose "Lectures on The Philosophical Doctrine of Religion, " Johan Augustus Eberhard's "Preparation for Natural Theology" (1781) is now available in English for the first time. With a strong focus on the various intellectual debates and historically significant texts in late renaissance and early modern theology, "Preparation for Natural Theology "influenced the way Kant thought about practical cognition as well as moral and religious concepts. Its publication marks the start of Kant describing the moral world using "supersensible" (ubersinnlich); a term unique to Eberhard. Access to Eberhard's complete text makes it possible to distinguish where in the lectures Kant is making changes to what Eberhard has written and where he is articulating his own ideas. Identifying new unexplored lines of research, this translation provides a deeper understanding of Kant's explicitly religious doctrines and his central moral writings, such as the "Groundwork of the Metaphysics of Morals" and the "Critique of Practical Reason.""Preparation for Natural Theology "features a dual English-German / German-English glossary, a concordance and an introduction situating the book in relation to 18th-century theology and philosophy making it an essential contribution to twenty-first century Kantian studies.