A Commentary, Critical, Practical, and Explanatory on the Old and New Testaments, by Robert Jamieson, A.R. Fausset and David Brown  at sacred-texts.com
num 34:2THE BORDERS OF THE LAND OF CANAAN. (Num. 34:1-29)
this is the . . . land of Canaan--The details given in this chapter mark the general boundary of the inheritance of Israel west of the Jordan. The Israelites never actually possessed all the territory comprised within these boundaries, even when it was most extended by the conquests of David and Solomon.
num 34:3your south quarter--The line which bounded it on the south is the most difficult to trace. According to the best biblical geographers, the leading points here defined are as follows: The southwest angle of the southern boundary should be where the wilderness of Zin touches the border of Edom, so that the southern boundary should extend eastward from the extremity of the Dead Sea, wind around the precipitous ridge of Akrabbim ("scorpions"), thought to be the high and difficult Pass of Safeh, which crosses the stream that flows from the south into the Jordan--that is, the great valley of the Arabah, reaching from the Dead to the Red Sea.
num 34:5river of Egypt--the ancient brook Sihor, the Rhinocolura of the Greeks, a little to the south of El-Arish, where this wady gently descends towards the Mediterranean (Jos 13:3).
num 34:6the western border--There is no uncertainty about this boundary, as it is universally allowed to be the Mediterranean, which is called "the great sea" in comparison with the small inland seas or lakes known to the Hebrews.
num 34:7north border--The principal difficulty in understanding the description here arises from what our translators have called mount Hor. The Hebrew words, however, Hor-ha-Hor, properly signify "the mountain of the mountain," or "the high double mountain," which, from the situation, can mean nothing else than the mountain Amana (Sol 4:8), a member of the great Lebanon range (Jos 13:5).
num 34:8entrance of Hamath--The northern plain between those mountain ranges, now the valley of Balbeck (see on Num 13:21).
Zedad--identified as the present Sudud (Eze 47:15).
num 34:9Ziphron--("sweet odor").
Hazar-enan--("village of fountains"); but the places are unknown. "An imaginary line from mount Cassius, on the coast along the northern base of Lebanon to the entering into the Bekaa (Valley of Lebanon) at the Kamosa Hermel," must be regarded as the frontier that is meant [VAN DE VELDE].
num 34:10east border--This is very clearly defined. Shepham and Riblah, which were in the valley of Lebanon, are mentioned as the boundary line, which commenced a little higher than the sources of the Jordan. Ain is supposed to be the source of that river; and thence the eastern boundary extended along the Jordan, the sea of Chinnereth (Lake of Tiberias), the Jordan; and again terminated at the Dead Sea. The line being drawn on the east of the river and the seas included those waters within the territory of the western tribes.
num 34:13The two tribes and the half-tribe have received their inheritance on this side Jordan--The conquered territories of Sihon and Og, lying between the Arnon and mount Hermon, were allotted to them--that of Reuben in the most southerly part, Gad north of it, and the half Manasseh in the northernmost portion.
num 34:16names of the men . . . which shall divide the land--This appointment by the Lord before the Jordan tended not only to animate the Israelites faith in the certainty of the conquest, but to prevent all subsequent dispute and discontent, which might have been dangerous in presence of the natives. The nominees were ten princes for the nine and a half tribes, one of them being selected from the western section of Manasseh, and all subordinate to the great military and ecclesiastical chiefs, Joshua and Eleazar. The names are mentioned in the exact order in which the tribes obtained possession of the land, and according to brotherly connection.