| Barnes' Notes on the Bible Of Japhleti - Rather "of the Japhletite." All history of the name is lost.
Clarke's Commentary on the BibleBeth-horon the nether - This city was about twelve miles from Jerusalem, on the side of Nicopolis, formerly Emmaus. - Calmet. See the note on Joshua 10:10.
Gill's Exposition of the Entire BibleAnd goeth down westward to the coast of Japhleti,.... This place is now unknown, though no doubt well known to the sons of Joseph, when this lot fell to them, and its border was described: unto the coast of Bethhoron the nether: so called to distinguish it from Bethhoron the upper, Joshua 16:5; this was about twelve miles from Jerusalem; See Gill on Joshua 10:10; and to Gezer: which was about a day's journey from Bethhoron, as appears from the passages in the Apocrypha:"39 So Nicanor went out of Jerusalem, and pitched his tents in Bethhoron, where an host out of Syria met him. 40 But Judas pitched in Adasa with three thousand men, and there he prayed, saying, ... 45 Then they pursued after them a day's journey, from Adasa unto Gazera, sounding an alarm after them with their trumpets.'' (1 Maccabees 7)Jerom (c) says in his time it was a village called Gazara, four miles from Nicopolis, or Emmaus. It is the same with Gadara, as it is sometimes called by Josephus, who says (d), the tribe of Ephraim took in the land from the river Jordan to Gadara; this was a royal city; see Joshua 10:33, and the outgoings thereof are at the sea: the Mediterranean sea. (c) De loc. Heb. fol. 92. A. (d) Antiqu. l. 5. c. 1. sect. 22.
Keil and Delitzsch Biblical Commentary on the Old TestamentFrom this point "it went down westward to the territory of the Japhletites to the territory of lower Beth-horon," or, according to Joshua 18:13, "to the mountain (or range) which is on the south by lower Beth-horon." The Japhletite is altogether unknown as the Asherite of this name cannot possibly be thought of (1 Chronicles 7:32-33). Lower Beth-horon is the present Beit-Ur Tachta, a village upon a low ridge. It is separated from Upper Beth-horon, which lies farther east, by a deep wady (see at Joshua 10:10, and Rob. iii. p. 59). "And to Gezer," which was probably situated near the village of el Kubab (see at Joshua 10:33). "And the goings out thereof are at the sea" (the Mediterranean), probably running towards the north-west, and following the Wady Muzeireh to the north of Japho, which was assigned to the Danites, according to Joshua 19:46.
Geneva Study BibleAnd goeth down westward to the coast of Japhleti, unto the coast of Bethhoron the nether, and to Gezer: and the goings out {b} thereof are at the sea. (b) Of their inheritance.
Matthew Henry's Concise Commentary16:20-63 Here is a list of the cities of Judah. But we do not here find Bethlehem, afterwards the city of David, and ennobled by the birth of our Lord Jesus in it. That city, which, at the best, was but little among the thousands of Judah, Mic 5:2, except that it was thus honoured, was now so little as not to be accounted one of the cities.
Matthew Henry's Whole Bible CommentaryChapter 16 It is a pity that this and the following chapter should be separated, for both of them give us the lot of the children of Joseph, Ephraim and Manasseh, who, next to Judah, were to have the post of honour, and therefore had the first and best portion in the northern part of Canaan, as Judah now had in the southern part. In this chapter we have, I. A general account of the lot of these two tribes together (v. 1-4). II. The borders of the lot of Ephraim in particular (v. 5-10). That of Manasseh following in the next chapter. Verses 1-4 Though Joseph was one of the younger sons of Jacob, yet he was his eldest by his most just and best beloved wife Rachel, was himself his best beloved son, and had been the greatest ornament and support of his family, kept it from perishing in a time of famine, and had been the shepherd and stone of Israel, and therefore his posterity were very much favoured by the lot. Their portion lay in the very heart of the land of Canaan. It extended from Jordan in the east (v. 1) to the sea, the Mediterranean Sea, in the west, so that it took up the whole breadth of Canaan from side to side; and no question the fruitfulness of the soil answered the blessings both of Jacob and Moses, Gen. 49:25, 26, and Deu. 33:13, etc. The portions allotted to Ephraim and Manasseh are not so particularly described as those of the other tribes; we have only the limits and boundaries of them, not the particular cities in them, as before we had the cities of Judah and afterwards those of the other tribes. For this no reason can be assigned, unless we may suppose that Joshua being himself of the children of Joseph they referred it to him alone to distribute among them the several cities that lay within their lot, and therefore did not bring in the names of their cities to the great council of their princes who sat upon this affair, by which means it came to pass that they were not inserted with the rest in the books. | 
