Judges 20:25
“And Benjamin went forth against them out of Gibeah the second day, and destroyed down to the ground of the children of Israel again eighteen thousand men; all these drew the sword.”
(And the children of Israel went up and wept before the Lord until even, and asked counsel of the Lord, saying, Shall I go up again to battle against the children of Benjamin my brother? And the Lord said, Go up against him.)
And the children of Israel came near against the children of Benjamin the second day.
And Benjamin went forth against them out of Gibeah the second day, and destroyed down to the ground of the children of Israel again eighteen thousand men; all these drew the sword.
Then all the children of Israel, and all the people, went up, and came unto the house of God, and wept, and sat there before the Lord, and fasted that day until even, and offered burnt offerings and peace offerings before the Lord.
And the children of Israel enquired of the Lord, (for the ark of the covenant of God was there in those days,
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Related Verses
“And the Lord smote Benjamin before Israel: and the children of Israel destroyed of the Benjamites that day twenty and five thousand and an hundred men: all these drew the sword.”
“And the children of Benjamin came forth out of Gibeah, and destroyed down to the ground of the Israelites that day twenty and two thousand men.”
“So that all which fell that day of Benjamin were twenty and five thousand men that drew the sword; all these were men of valour.”
“And there fell of Benjamin eighteen thousand men; all these were men of valour.”
“And the children of Benjamin were numbered at that time out of the cities twenty and six thousand men that drew sword, beside the inhabitants of Gibeah, which were numbered seven hundred chosen men.”