And eastward he inhabited,.... Either Bela, or the tribe of Reuben:
unto the entering in of the wilderness; the wilderness of Kedemoth, which was near to Sihon king of Heshbon, whose land the Reubenites inhabited, Deuteronomy 2:26
from the river Euphrates; a learned man r thinks that this river Phrat was different from the Euphrates near Babylon, which was northward, since this was to the east or southeast:
because their cattle were multiplied in the land of Gilead; therefore their habitation was extended further, even to the river Euphrates, as in the days of David and Solomon, 2 Samuel 8:3.
r Texelii Phoenix, l. 3. c. 7. p. 272.