Judges 10:8

That year — 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 contemporary with this affliction. The case of Jair and 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 contemporary; 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 amongst the Israelites, but could not deliver them from their enemies.