Genesis 36:37

Rehoboth. Some scholars have identified this with Rehoboth-Ir in Assyria (ch. 10:11), which cannot possibly be correct. Others have located it elsewhere on the Euphrates, inasmuch as the Bible usually designates the Euphrates as “the river.” If this were true, the Edomite king Saul must then have been a foreigner. It is more likely that Rehoboth was either the Idumaean Robotha, whose location is uncertain, or Er Ruheibeh, 23 mi. southwest of Beersheba in a valley near El ‘Arish. In the latter case “the river” would refer to the brook on which the city lay.