Judges 9:23
23. Then God sent an evil spirit between Abimelech and the men of Shechem—In the course of providence, jealousy, distrust, secret disaffection, and smothered rebellion appeared among his subjects disappointed and disgusted with his tyranny; and God permitted those disorders to punish the complicated crimes of the royal fratricide and idolatrous usurper.
Judges 12:4
4-6. the men of Gilead smote Ephraim, because they said, Ye Gileadites are fugitives of Ephraim—The remonstrances of Jephthah, though reasonable and temperate, were not only ineffectual, but followed by insulting sneers that the Gileadites were reckoned both by the western Manassites and Ephraimites as outcasts—the scum and refuse of their common stock. This was addressed to a peculiarly sensitive people. A feud immediately ensued. The Gileadites, determined to chastise this public affront, gave them battle; and having defeated the Ephraimites, they chased their foul-mouthed but cowardly assailants out of the territory. Then rushing to the fords of the Jordan, they intercepted and slew every fugitive. The method adopted for discovering an Ephraimite was by the pronunciation of a word naturally suggested by the place where they stood. Shibboleth, means "a stream"; Sibboleth, "a burden." The Eastern tribe had, it seems, a dialectical provincialism in the sound of Shibboleth; and the Ephraimites could not bring their organs to pronounce it.
Judges 20:21
18-28. the children of Israel arose, and went up to the house of God—This consultation at Shiloh was right. But they ought to have done it at the commencement of their proceedings. Instead of this, all their plans were formed, and never doubting, it would seem, that the war was just and inevitable, the only subject of their inquiry related to the precedency of the tribes—a point which it is likely was discussed in the assembly. Had they asked counsel of God sooner, their expedition would have been conducted on a different principle—most probably by reducing the number of fighting men, as in the case of Gideon's army. As it was, the vast number of volunteers formed an excessive and unwieldy force, unfit for strenuous and united action against a small, compact, and well-directed army. A panic ensued, and the confederate tribes, in two successive engagements, sustained great losses. These repeated disasters (notwithstanding their attack on Benjamin had been divinely authorized) overwhelmed them with shame and sorrow. Led to reflection, they became sensible of their guilt in not repressing their national idolatries, as well as in too proudly relying on their superior numbers and the precipitate rashness of this expedition. Having humbled themselves by prayer and fasting, as well as observed the appointed method of expiating their sins, they were assured of acceptance as well as of victory. The presence and services of Phinehas on this occasion help us to ascertain the chronology thus far, that the date of the occurrence must be fixed shortly after the death of Joshua.
Jud 20:29-48. THEY DESTROY ALL THE BENJAMITES, EXCEPT SIX HUNDRED.
2 Chronicles 13:17
13-17. But Jeroboam caused an ambushment to come about behind them—The oration of Abijah, however animating an effect it might have produced on his own troops, was unheeded by the party to whom it was addressed; for while he was wasting time in useless words, Jeroboam had ordered a detachment of his men to move quietly round the base of the hill, so that when Abijah stopped speaking, he and his followers found themselves surprised in the rear, while the main body of the Israelitish forces remained in front. A panic might have ensued, had not the leaders "cried unto the Lord," and the priests "sounded with the trumpets"—the pledge of victory (Nu 10:9; 31:6). Reassured by the well-known signal, the men of Judah responded with a war shout, which, echoed by the whole army, was followed by an impetuous rush against the foe. The shock was resistless. The ranks of the Israelites were broken, for "God smote Jeroboam and all Israel." They took to flight, and the merciless slaughter that ensued can be accounted for only by tracing it to the rancorous passions enkindled by a civil war.