This book studies the influence of Hellenism and Greco-Roman philosophy on Philo of Alexandria’s view of the Mosaic law. In particular, the book examines how Philo integrated Greco-Roman conceptions of law, such as Unwritten Law, the Law of Nature, and the Living Law , into his understanding of the Mosaic law of the Jews and the lives of the Patriarchs. Philo transformed Greco-Roman law and shaped it into something peculiar to a Jewish understanding of the cosmos and its creation by one God. Martens examines Philo’s creativity in adapting Greco-Roman law to create something new in the annals of philosophy and the apologetic purposes his new philosophy served for Judaism.