Judges 15:20

“And he judged Israel in the days of the Philistines twenty years.] While they had the power over the Israelites, who were not entirely delivered out of their hands by Samson, he only began to deliver them, but did not completely do it; though he got many advantages over them, and wrought many salvations and deliverances, yet was not the author of perfect salvation, (see <071305>Judges 13:5) however, he was a check upon the Philistines, and protected the Israelites from heavier oppressions, which otherwise they would have come under; and no doubt administered justice and judgment among them, and was an instrument of their reformation, and of preserving them from idolatry; for in such things…”

“He judged - That is, he pleaded their cause, and avenged them against the Philistines. Of the Philistines - That is, whilst the Philistines had the power and dominion, from which he was not fully to deliver, but only to begin to deliver them. 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, but added to them, and are comprehended within them; which proposition is of great importance for clearing this difficult part of scripture - chronology. Next: Judges Chapter 16”

“Jdg 13:1, Jdg 13:5, Jdg 16:31 "He seems to have judged South-west Israel during twenty years of their servitude of the Philistines. Next: Judges Chapter 16”