This document provides an overview of the various religious options and philosophies that existed in the 1st century AD Roman world, including those practiced by Jews and early Christians. It describes the decline of traditional Greek/Roman religions and rise of mystery cults, Gnosticism, and philosophies such as Stoicism and Epicureanism. The document also summarizes the diversity within Judaism in this period, including the oral traditions that developed into the Mishnah, Talmud, and other Rabbinic literature.