Then the boundary extends from the top of the mountain to the spring of the waters of Nephtoah, and from there to the cities of Mount Ephron. Then the boundary bends around to Baalah (that is, Kiriath-jearim).
Judah and Joseph were the two sons of Jacob on whom Reuben's forfeited birth-right devolved. Judah had the dominion entailed on him, and Joseph the double portion, and therefore these two tribes were first seated, Judah in the southern part of the land of Canaan and Joseph in the northern part, and on them the other seven did attend, and had their respective lots as...
Commenting on Joshua 15:1-12
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...
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.