The sacred scriptures of the Jewish Religion are the Torah, Prophets, and 'Writings', corresponding to the 'Old Testament' up to the books of Chronicles, plus the 'Megillot' of Esther, Ruth, Lamentations, Song of Songs, and Ecclesiastes.
There is only one Jewish religion and all Jews follow the Torah as given to Moses on Mount Sinai over 3000 years ago.
Over the centuries different areas developed different customs. Famous...