Parallel
Judges 12:9
Brenton's English Septuagint · Berean Standard Bible
And he had thirty sons, and thirty daughters, whom he sent forth; and he brought in thirty daughters for his sons from without; and he judged Israel seven years.
He had thirty sons, as well as thirty daughters whom he gave in marriage to men outside his clan; and for his sons he brought back thirty wives from elsewhere. Ibzan judged Israel seven years.