Judaism is a monotheistic religion with a rich history spanning over 3,000 years. It centers on belief in one God, ethical behavior, and following the Torah's teachings. Jewish identity is complex, determined by maternal lineage, conversion, or cultural affiliation. The global Jewish population is around 15 million, with the largest communities in Israel and the United States. Jewish communities are diverse, encompassing various ethnic backgrounds, cultural practices, and levels of religious observance. This diversity reflects Judaism's long history and global spread.