i.e. He pleaded their cause, and avenged them against the Philistines. In the days of the Philistines, i.e. whilst the Philistines had the power and dominion, from which he was not fully to deliver, but only to begin to deliver them, as it was foretold, Judges 13:5. From this place it is manifest, that in the computation of the times of the judges, the years of servitude or oppression are not to be separated from the years of the judges, and added to them, but are comprehended within them; which proposition is of great importance for clearing this difficult part of Scripture chronology, and for justifying that account of times given 1 Kings 6:1.
Related Commentaries of Judges 15:20
Judges 15:20
20 And he judged Israel in the days of the Philistines twenty years.