That same day the Benjamites came out against them from Gibeah and cut down another 18,000 Israelites, all of them armed with swords.
We have here the defeat of the men of Israel in their first and second battle with the Benjamites. I. Before their first engagement they asked counsel of God concerning the order of their battle and were directed, and yet they were sorely beaten.
Commenting on Judges 20:18-25
And Benjamin went forth against them out of Gibeah the second day,.... Flushed with the victory they had obtained the day before: and destroyed down to the ground of the children of Israel again eighteen thousand men, all these drew the sword, were armed men; this, with the 22,000 slain the day preceding, made 40,000; the same number singled out from among them by lot...
THE ISRAELITES LOSE FORTY THOUSAND. (Jdg 20:18-28) 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...
Commenting on Judges 20:18-28