Are the Ebionites Jews?
Judaism is a type of Yahwism that became highly developed subset of the Biblical religion described in the Hebrew Bible (called “Old Testament” by most Christians). It began in earnest a little before Christianity did. People of the tribe of Judah (Y’hudah) with remnants of other tribes of ancient Israel returned from captivity in Babylonia, and so Yahwism came to be represented by these Yehudim (“Jews”).