Judges 21:8-10

8So they asked, “Which one of the tribes of Israel failed to come up before the LORD at Mizpah?” And, in fact, no one from Jabesh-gilead had come to the camp for the assembly. 9For when the people were counted, none of the residents of Jabesh-gilead were there.

10So the congregation sent 12,000 of their most valiant men and commanded them: “Go and put to the sword those living in Jabesh-gilead, including women and children.