David Novak is widely recognized as one of the most prominent Jewish thinkers in North America today and his most important contribution to philosophy has been his work on natural law. This book is an exploration of the shift in the content and context of that theory by reference to the metaphysical meaning that Novak ultimately assigns to reason. This change is then analyzed within the framework of Novak's covenantal theology and his developing view of redemption in particular. Through this examination, this book highlights the contribution of Novak's natural law theory to the continuing debate over the role of reason in Judaism.