Judaism and Christianity in the Graeco-Roman World

Christianity is an Abrahamic monotheistic religion based on the life, teachings, and miracles of Jesus of Nazareth, known by Christians as the Christ, or "Messiah", who is the focal point of the Christian faiths. It is the world's largest religion, with over 2.4 billion followers, or 33% of the global population, known as Christians. Christians make up a majority of the population in about two-thirds of the countries and territories in the world. They believe that Jesus is the Son of God and the savior of humanity whose coming as the Messiah (the Christ) was prophesied in the Old Testament. Christianity has played a prominent role in the shaping of Western Civilization.

Judaism (originally from Hebrew יהודה‬, Yehudah, "Judah"; via Latin and Greek) is the religion of the Jewish people. It is an ancient, monotheistic, Abrahamic religion with the Torah as its foundational text. It encompasses the religion, philosophy and culture of the Jewish people. Judaism is considered by religious Jews to be the expression of the covenant that God established with the Children of Israel. Judaism includes a wide corpus of texts, practices, theological positions, and forms of organization. The Torah is part of the larger text known as the Tanakh or the Hebrew Bible, and supplemental oral tradition represented by later texts such as the Midrash and the Talmud. With between 14.5 and 17.4 million adherents worldwide, Judaism is the tenth largest religion in the world.

The world is the planet Earth and all life upon it, including human civilization. In a philosophical context, the "world" is the whole of the physical Universe, or an ontological world (the "world" of an individual). In a theological context, the world is the material or the profane sphere, as opposed to the celestial, spiritual, transcendent or sacred spheres. "End of the world" scenarios refer to the end of human history, often in religious contexts.