Judaism is an Abrahamic, monotheistic, and ethnic religion, comprises the collective spiritual, cultural, and legal traditions of the Jewish people. Contemporary Judaism having originated as an organized religion in the Middle East during the Bronze Age, and evolved from Yahwism, the cultic polytheistic religious movement of ancient Israel and Judah, around the 6th/5th century BCE, and is thus considered to be one of the oldest monotheistic religions. Along with Samaritanism, to which it is closely related, Judaism is one of the two oldest Abrahamic religions.

Monotheism is the belief that one god is the only deity. A distinction may be made between exclusive monotheism, in which the one God is a singular existence, and both inclusive and pluriform monotheism, in which multiple gods or godly forms are recognized, but each are postulated as extensions of the same God.