Judges 20:26

We have here a full account of the complete victory which the Israelites obtained over the Benjamites in the third engagement: the righteous cause was victorious at last, when the managers of it amended what had been amiss; for, when a good cause suffers, it is for want of good management. Observe then how the victory was obtained, and how it was pursued. I. How the victory was obtained. Two things they had trusted too much to in the former engagements - the goodness of their cause and the superiority of their numbers. It was true that they had both right and strength on their side, which were great advantages; but they depended too much upon them, to the neglect of those duties to which now, this third time, when they see their error, they apply themselves. 1. They were previously so confident of the goodness of their cause that they thought it needless to address themselves to God for his presence and blessing. They took it for granted that God would bless them, nay, perhaps they concluded that he owed them his favour, and could not in justice withhold it, since it was in defence of virtue that they appeared and took up arms.

— Matthew Henry's Concise Commentary (public domain)