Judges 20:48

And the men of Israel, in a fury which knew no mercy, turned again upon the children of Benjamin, on the defenseless part of the population, old people, women, and children, and smote them with the edge of the sword, as well the men of every city as the beast, and all that came to hand, whatever living thing they happened to strike; also they set on fire all the cities that they came to. It was a campaign of extermination much more savage than any undertaken against any of the heathen nations. But it was the punishment of God upon the tribe which had taken the part of the criminals of Gibeah; for the holiness of God cannot bear the abominations of the heathen in the midst of His people. All those who know His command and truth, and still persist in doing according to the manner of the heathen, should be excluded from the company of the believers, eventually to be punished by the wrath of Him who is a jealous God.