Genesis 25:13

The descendants of Ishmael settled generally in N. Arabia, and with the Joktanites(Genesis 10:26), or 'pure Arabs,' of Arabia Felix, formed the great Arab race scattered over Syria and the shores of the Persian Gulf. Nebajoth] the Nabateans became an important people after the death of Alexander the Great. Their chief town was Petra in Idumæa. The name became synonymous with Arabians, and all the land between the Euphrates and the Gulf of Akaba was at one time called Nabatene. Kedar] a people often mentioned in OT.: they dwelt between Arabia and Babylonia.