This book is an analysis of early Jewish thought on human nature, specifically, the complex of characteristics that are understood to be universally innate, and/or God-given, to collective humanity and the manner which they depict human existence in relationship, or lack thereof, to God. Jewish discourse in the Greco-Roman period (4th c. BCE until 1st c. CE) on human nature was not exclusively particularistic, although the immediate concern was often communal-specific. Evidence shows that many of these discussions were also an attempt to grasp a general, or universal, human nature. The focus of this work has been narrowed to three categories that encapsulate the most prevalent themes in Second Temple Jewish texts, namely, creation, composition, and condition.