1 Chronicles 5:7-10

7And his brethren by their families, when the genealogy of their generations was registered: the chief, Jeiel, and Zechariah,

8and Bela the son of Azaz, the son of Shema, the son of Joel, who dwelt in Aroer, as far as Nebo and Baal Meon.

9Eastward they settled as far as the entrance of the wilderness this side of the River Euphrates, because their cattle had multiplied in the land of Gilead.

10Now in the days of Saul they made war with the Hagrites, who fell by their hand; and they dwelt in their tents throughout the entire area east of Gilead.