Joshua 16:1-4
1 And the lot of the children of Joseph fell from Jordan by Jericho, unto the water of Jericho on the east, to the wilderness that goeth up from Jericho throughout mount Beth-el, 2 And goeth out from Beth-el to Luz, and passeth along unto the borders of Archi to Ataroth, 3 And goeth down westward to the coast of Japhleti, unto the coast of Beth-horon the nether, and to Gezer: and the goings out thereof are at the sea. 4 So the children of Joseph, Manasseh and Ephraim, took their inheritance.
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. xlix. 25, 26, and Deut. xxxiii. 13, &c. 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.