Judges 10:7,8

He sold them into the hand of the Philistines, &c. The one on the west, the other on the east, so that they were molested on both sides. That year they vexed, &c. Or, that year they had vexed and oppressed the children of Israel eighteen years This was the eighteenth year from the beginning of that oppression. And these eighteen years are not to be reckoned from Jair's death, because that would enlarge the time of the judges beyond the just bounds; but from the fourth year of Jair's reign: so that the greatest part of Jair's reign was cotemporary with this affliction. This case of Jair and that of Samson seem to be much alike. For as it is said of Samson, that he judged Israel in the days of the tyranny of the Philistines, twenty years, Judges 15:20; by which it is evident that his judicature and their dominion were cotemporary; the like is to be conceived of Jair, that he began to judge Israel, and endeavoured to reform religion, and purge out all abuses; but being unable to effect this, through the backwardness of the people, God would not enable him to deliver the people, but gave them up to this sad oppression; so that Jair could only determine differences among the Israelites, but could not deliver them from their enemies.