Judaism (from the Latin Iudaismus, derived from the Greek Ioudaïsmos, and ultimately from the Hebrew יהודה, Yehudah, "Judah"; in Hebrew: יַהֲדוּת, Yahadut) is a set of beliefs and practices originating in the Hebrew Bible (Old Testament to Christians), also known as the Tanakh, and explored and explained in later texts such as the Talmud. Jews consider Judaism to be the expression of the covenantal relationship which God developed with the Children of Israel.
Judaism claims a historical continuity spanning well over 3000 years. It is one of the oldest monotheistic religions, and the oldest to survive into the present day. Its texts, traditions and values have inspired later Abrahamic religions, including Christianity, Islam and the Baha'i Faith. Many aspects of Judaism have also directly or indirectly influenced secular Western ethics and civil law.
Most of the tenets of Judaism had lapsed by 2010, so as to keep the identity of the surviving Jews living in the Greater German Reich a secret. The Jews did remember the specific practices, and were able to teach these to their children.
Judaism was practiced in a small Jewish community in Thessalonica. Though the number of Jews in the city was significantly smaller than the number of Christians, Jewish prayers and magic were for some reason more resistant to Avar spells than Christian ones were. Perhaps this was because the Avars were focusing their efforts against Christianity rather than attempting to battle two new religions at once. Perhaps Judaism was more pleasing to the God that both it and Christianity worshiped, and thus more firmly under His protection.
Judaism could not be openly practiced in the Greater German Reich for fear that it would expose its practicioner as an ethnic Jew, rather than because the Nazi Party found the faith itself objectionable. Among Jews who were persecuted by the Germans, devotion to the religion was encouraged, and after the Racetook overPoland, the faith was practiced openly by a large and vibrant faith community.