Judges 9:51

9:51 There was a fortified tower in the center of the city, so all the men and women, as well as the city’s leaders, ran into it and locked the entrance. Then they went up to the roof of the tower.

Judges 12:9

12:9 He had thirty sons. He arranged for thirty of his daughters to be married outside his extended family, and he arranged for thirty young women to be brought from outside as wives for his sons. Ibzan led Israel for seven years;