The divine command to exterminate Amalek--men, women, children, and even animals who have no free will--is what in contemporary terms has been called genocide. Louis Feldman explores how the earliest systematic commentators on the Bible--the Hellenistic Jewish philosopher Philo in his many essays on biblical themes; the mysterious, still unclassified Pseudo-Philo in his Biblical Antiquities; the premier Jewish historian and polymath Josephus in his...