In conformity with ancient methods of genealogy (q.v.), Judah is traced back to a son of Jacob or Israel by Leah and along with other "tribes" (Dan, Levi, Simeon, &c.) is included under the collective term Israel. Thus it shares the general traditions of the Israelites, although Judah appears as an individual in the story of his "brother" Joseph (on ch. xxxvii. seq., see GENESIS). Its boundaries in Joshua xv. are manifestly artificial or imaginary; they include the Philistines and number places which are elsewhere ascribed to Simeon or Dan. The origin of the name (_Yehudah_) is quite uncertain; the interpretation "praised" is suggested in Gen. xxix. 35 (cf; xlix. 8 seq.), but some connexion with allied names, as Yehud (Yahudiya, E. of Jaffa), or Ehud (a Benjamite clan) seems more probable. That Judah, whatever its original connotation, underwent development through the incorporation of other clans appears from 1 Chron. ii., iv., where it is found to contain a large element of non-Israelite population whose names find analogies or parallels in Simeonite, Edomite and other southern lists.[1] Indeed, underlying the account of the Israelite exodus (q.v.) there are traces of a separate movement of certain clans--apart from the Israelite invasion of Palestine--who are ultimately found in the south of Judah; and the traditions in Chronicles themselves allow the view that the incorporation of these elements began under David, when Judah first occupies a prominent position in biblical history (cf. Cheyne, _Ency. Bib._, col. 2618 seq., and see CALEB, JERAHMEEL, KENITES). But such movements were not necessarily limited to one single period, and the evidence connecting (a) the non-Israelite clans of Judah with Levites, and (b) both with the south, is found in narratives referring to several different ages and might point to an unceasing relationship with the south. On the other hand, clans, which in the traditions of David's time were in the south of Judah, about five hundred years later (in the exile) are found near Jerusalem (e.g. Caleb), so that either these survived the strenuous vicissitudes of half a millennium or all perspective of their early history has been lost. In Gen. xxxviii. a curious narrative points to the separation of Judah "from his brethren" and his marriage with Shua the Canaanite; two sons Er and Onan perish and the third Shelah survives. From Judah and Er's widow Tamar are derived Perez and Zerah, and these with Shelah appear in post-exilic times as the three representative families of Judah (Neh. xi. 4-6; 1 Chron. ix. 4-6). This story, amid a number of other motives, appears to reflect the growth of the tribe of Judah and its fluctuations, but that the reference is to any very early period is unlikely, partly because the interest of the story is in post-exilic families, and partly because