Judges 21:1

The men of Israel had sworn in Mizpeh When they first assembled there in the beginning of this war, after the whole tribe had espoused the quarrel of the men of Gibeah. Saying They do not here swear the utter extirpation of the tribe, which fell out beyond their expectation, but only not to give their daughters to those men who should survive; justly esteeming them for their villany to be as bad as heathen, with whom they were forbidden to marry.