The mount. Not a particular “mount,” but all the “hill country” (RSV) of Palestine, then Amorite territory. It is the same area as that covered by the 12 spies (Num. 13:17–25).
All the places nigh. “All their neighbors” (RSV). The regions adjacent to the hill country of Palestine are next listed.
The plain. Heb. ‘Arabah, the depression including the lower Jordan valley (see on Deut. 1:1; see also Deut. 3:17; 2 Kings 25:5), the Dead Sea, and the plain extending southward to the Gulf of Aqaba. The Dead Sea was called “the sea of the plain [’Araba]” (Joshua 3:16; 2 Kings 14:25).
The hills. From the same word as “mount” earlier in the verse, in reference to the hilly uplands of central Palestine.
The vale. Heb. Shephelah, a term applied to the foothill country lying between the uplands of central Palestine and the coastal plain, particularly that part of it between Judah and Philistia.
The south. Literally, “the Negeb” the region about Beersheba and Kadesh-bamea.
The sea side. The coastal plains of Philistia, and that of Sharon, to the north of Philistia.