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.
Cross-reference
Judges 20:21
Parallel
Judges 20:21 records Benjamin's first victory; here the second day repeats the same pattern—both describe heavy Israelite losses.
Judges 20:15
Historical context
Judges 20:15 gives the number of Benjamin's army — directly contextual to the 18,000 slain here.
Genesis 49:27
Prophetic fulfillment
Genesis 49:27 prophesies Benjamin as a wolf devouring prey — fulfilled here as Benjamin destroys 18,000 Israelites.