Judges 20:10

And we will take ten men of an hundred throughout all the tribes of Israel, and an hundred of a thousand, and a thousand out of ten thousand, to fetch victual for the people, that they may do, when they come to Gibeah of Benjamin, according to all the folly that they have wrought in Israel.

Cross-reference

In Judges 20:6, the Levite describes the 'abomination and outrage' that this verse then refers to as the reason for action.

In Judges 21:1, the oath not to give daughters to Benjamin follows the events set in motion by this verse's preparations.