Ibzan of Bethlehem אבצן מבית לחם

"And after him Ibzan of Bethlehem judged Israel. He had thirty sons, and thirty daughters he sent abroad, and thirty daughters he brought in from abroad for his sons. And he judged Israel seven years."

Sixty marriages, all outside his own clan. After Jephthah's war with Ephraim, in which forty-two thousand of their own people died, this looks less like a household detail than a policy: bind the tribes by kinship rather than by the sword.

The Bethlehem here is most likely the one in the territory of Zebulun, not the Judean town. A tradition recorded in the Talmud identifies Ibzan with Boaz of the book of Ruth — the man who married a Moabite woman; hence the attention to marriages with outsiders. That identification is given as tradition, not as a verse of the Tanakh.

The years here are computed by adding up the terms given in the book of Judges itself, counting from the death of Joshua; they are not stated as such in the source.