Before any type of unified political entity named Israel existed, the Jewish groups whose descendants would later form Israel identified themselves by their particular tribe. If asked their nationality or country of origin, they would likely identify themselves as Danites (from the tribe of Dan; Ex. 31:6) or Ephraimites (from the tribe of Ephraim; Judg. 12:5), etc. The main way to differentiate these tribes from other tribes in Canaan was their common worship of the deity YHWH, but in terms of language or other cultural characteristics, it would have been difficult to tell a Canaanite from an Israelite.
Eventually, these separate tribes united together as a type of confederation, allies who made a treaty (covenant) to provide military aid for one another when threatened by an enemy state. It was only under the charismatic leadership of David that the 12 tribes united into a single political entity. Scholars refer to the period encompassing the reign of David and his son Solomon as the United Monarchy. This period, spanning only two generations, was the only time when all of the tribes were politically united, and after a contentious schism that resulted because the northern tribes felt exploited by the Judean kings, the northern tribes seceded from the “United Kingdom” and reverted back to the ancient northern versus southern division of the tribes. The main difference this time was that the southern kingdom now incorporated the tribe of Benjamin, located at the border between these two new nations, within its political borders. The tribe of Simeon (south of Judah) had already ceased to maintain a separate existence (see below). The new northern kingdom adopted the name Israel, while the southern kingdom took their regional name of Judah.
