Nephtoab is probably the modern "Ain Lifta", two miles and a half northwestward of Jerusalem: and Mount Ephron is conjecturally connected with the city Ephrain 2 Chronicles 13:19 or Ophrah Joshua 18:23.

Baalah, which is Kirjath-jearim - This place was rendered famous in Scripture, in consequence of its being the residence of the ark, for twenty years after it was sent back by the Philistines; see 1 Samuel 5:1-7:2.

And the border was drawn from the top of the hill,.... Mount Moriah, and went round in a circuit, so Jarchi and Kimchi:

unto the fountain of the water of Nephtoah; which lay at the bottom of it; which, according to the Jewish writers, is the same with the fountain of Etam, from whence a stream flowed to the dipping room in the water gate of the temple, where the high priest for the first time dipped himself on the day of atonement (p):

and went out to the cities of Mount Ephron; Jerom (q) speaks of an Ephron in the tribe of Judah, which was a very large village in his time, and went by the name of Ephraea, and was twenty miles from Aelia or Jerusalem to the north; and which Eusebius better places eight miles from it; and Jarchi observes, that the line went to the north side, and the border enlarged to this place; near to this mountain were cities, and it is not improbable that one of them might have its name from it; but whether this, or what mountain is here meant, is uncertain: some have thought of Ephraim, with its towns, mentioned in 2 Chronicles 13:19; which seems to have been in the tribe of Ephraim; though Reland (r) places it in the tribe of Benjamin:

and the border was drawn to Baalah, which is Kirjathjearim; called Kirjathbaal, or the city of Baal, Joshua 15:60; where it is probable there was a temple of Baal; and when it came into the hands of the Israelites, they changed its name to Kirjathjearim, or the city of the woods, because of the great number of trees which grew about it; for which reason it might have been pitched upon by the Heathens for their idolatrous service; it was one of the cities of the Gibeonites, Joshua 9:17; and, according to Eusebius and Jerom (s), it was nine or ten miles from Jerusalem, as you go to Lydda; it is also called Baalah in 1 Chronicles 13:6; and Baale of Judah, 2 Samuel 6:2.

(p) T. Bab. Yoma, fol. 31. 1. & Gloss. in ib. & T. Bab. Zebachim, fol. 54. 2. Kimchi in loc. (q) De loc. Heb. fol. 91. A. (r) Palestin. Illustrat. tom. 2. p. 765. (s) Apud ib. tom. 1. p. 488.

From this mountain height the boundary turned to the fountain of the waters of Nephtoah, i.e., according to Van de Velde's Mem. p. 336, the present village of Liftah (nun and lamed being interchanged, according to a well-known law), an hour to the north-west of Jerusalem, where there is a copious spring, called by the name of Samuel, which not only supplies large basons, but waters a succession of blooming gardens (Tobler, Topogr. v. Jerus. ii. pp. 758ff.; Dieterici, Reisebilder, ii. pp. 221-2). It then "went out to the towns of Mount Ephraim," which is not mentioned again, but was probably the steep and lofty mountain ridge on the west side of the Wady Beit Hanina (Terebinth valley), upon which Kulonia, a place which the road to Joppa passes, Kastal on a lofty peak of the mountain, the fortress of Milane, Soba, and other places stand (Seetzen, R. ii. pp. 64, 65; Rob. Bibl. Res. p. 158). The boundary then ran to Baala, i.e., Kirjath-jearim, the modern Kureyet el Enab, three hours to the north-west of Jerusalem (see at Joshua 9:17).

And the border was drawn from the top of the hill unto the fountain of the water of Nephtoah, and went out to the cities of mount Ephron; and the border was drawn to Baalah, which is Kirjathjearim:

15:1-12 Joshua allotted to Judah, Ephraim, and the half of Manasseh, their inheritances before they left Gilgal. Afterwards removing to Shiloh, another survey was made, and the other tribes had their portion assigned. In due time all God's people are settled.