Under Moses the Israelites conquered the country east of Jordan. The gorge of the Arnon, 2000 feet deep, and with almost perpendicular sides, was a natural boundary for the Moabites. Sometimes, indeed, they possessed territory north of it; but since it would take a traveller several hours to cross at the easiest parts, it was a natural boundary. The district between the Arnon and the Jabbok, Moses wrested from Sihon, king of Heshbon. And then, with the aid of the Ammonites, he conquered the country north of the Jabbok, from Og, the king of Bashan. These lands were not divided among all the tribes of Israel, but were given to Reuben, Gad, and half the tribe of Manasseh as their portion, for it was planned and intended that the country west of the Jordan should be conquered and given to the rest. The country west of Jordan was occupied by the Amorites and the Canaanites--that is, as some suppose, by the Highlanders of the central hills, and the Lowlanders of the plains around. But these peoples appear to have been subdivided, so that, together with the tribes of the Lebanon, we read of the Jebusite and the Girgashite, the Hivite, the Arkite, and the Sinite, the Arvadite, the Zemarite and the Hamathite, as well as Zidon and Heth (Gen. x. 15); and, in another place, of the Kenite, the Kenizzite, and the Kadmonite, the Hittite, the Perizzite, and the Rephaim (Gen. xv. 19). Of all these “nations” we are told by St Paul that seven were eventually destroyed, and Israel received their land for an inheritance (Acts xiii. 19). It was not the object of Joshua in the first place to conquer the “nations” in the plains, but rather those in the hills. It is true that the hills were comparatively barren and infertile, while the plains were exceedingly fruitful; but the hill country offered counter-balancing advantages. Compared with the Egyptians, who sometimes invaded Syria, the Israelites were small and weak, and their greatest security would be in the hill fastnesses. More immediately also, they have to consider that they are but a nation of foot soldiers, while the Canaanites of the plains possess chariots and horses. In any case, if they can once gain possession of the hills, it may be easier thence to conquer the plains at their leisure, than it would be for them by-and-bye to conquer the hills, with the plains as their base of operations.