4. They had been weakened before the coming of the Israelites either by war or by pestilence. The allusions in Exod. 23. 28; Deut. 7. 20; and Josh. 7. 12, have been referred to an invasion before that of Israel, or to some plague, which destroyed the native races.

II. THE CAMPAIGNS OF THE CONQUEST. These may be divided as follows:

1. The campaigns east of the Jordan. (B. C. 1451.) These were during the life-time of Moses, and gained for Israel all the territory between the brook Arnon and Mount Hermon.

1.) The conquest of Gilead was made at the battle of Jahaz, near the brook Arnon (Num. 21. 21-31). In one battle the Israelites gained the land of Gilead from the Arnon to the Hieromax.

2.) The conquest of Bashan was completed at the battle of Edrei, in the mountainous region.

3.) The conquest of Midian (Num. 31. 1-8) was led by the warrior-priest Phinehas, and by smiting the tribes on the east protected the frontier toward the desert. The land won by these three campaigns became the territory of the tribes of Reuben, Gad, and the half-tribe of Manasseh (Deut. 32).

2. The campaigns west of the Jordan (B. C. 1451) were led by Joshua, and showed great tactical skill and resistless energy of action. Joshua led his people across the Jordan and established a fortified camp, the center of operations during all his campaigns, at Gilgal (Josh. 4. 19).

1.) The first invasion was of central Palestine, beginning with Jericho (Josh. 6), taking Ai on the way (Josh. 8), and ending with Shechem, which apparently fell without resistance (Josh. 8. 30-33). This campaign gave to Israel the center of the land and divided their enemies into two sections.

2.) Next came the campaign against southern Palestine. At this time was fought the battle of Beth-horon (Josh. 10. 10), the most momentous in its results in all history, and one over which, if ever, the sun and moon might well stand still (Josh. 10. 12, 13).[D] After this great victory Joshua pursued his enemies and took the towns as far south as Hebron and Debir (Josh. 10. 29-39).