The coast of the Amorites. — This notice is added to account for the obstinate resistance of the Amorites, by showing the extent of their domain, which reached far to the south of Petra. Hazezon Tamar, “the sanctuary of the palm,” afterwards called Engedi, “the goat’s fountain,” belonged to them (Genesis 14:7; 2 Chronicles 20:2; Tristram, Land of Israel, p. 784). Another opinion given is, that the verse is added to sum up the chapter, by showing that neither the northern, eastern, nor western boundaries were thoroughly secured, but only that of the southern tribes.
From the going up to Akrabbim. — The same as Maaleh Akrabbim (Joshua 15:3), and “the ascent of scorpions” (Numbers 34:4), probably the Wady-es-Zuweirah (De Saulcy, La Terre Sainte, i. 528), where scorpions abound to this day under every stone; or the Wady-es-Sufah. Robinson supposes it to be the line of rocks which crosses the Jordan valley at right angles, eleven miles south of the Dead Sea (Bibl. Res. Ii. 120). It is the Akrabattine of 1Ma. 5:3. It formed the southern boundary of the Holy Land, being a wall of cliffs which separates the Jordan valley from the wilderness.
From the rock. — From “Ras-Selah,” i.e., from Petra, the famous capital of Idumea (2 Kings 14:7; Isaiah 16:1; Obadiah 1:3). Keil and Delitzsch refer it to the well-known rock at Kadesh-Meribah (Numbers 20:8-10).
And upward. — It is uncertain whether this means “and beyond,” i.e., their border extended even farther south; or, “and northwards,” i.e., this was their extreme southern limit.
The history of the Twelve Tribes is nowhere separately drawn out in Scripture. The reader will find the character and career of each tribe graphically sketched in Dean Stanley’s Sinai and Palestine, Judges 3-11; and more briefly in the Lectures on the Jewish Church, 1:261-281.