Jamieson, Fausset and Brown on Judges 15:9-17

Jud 15:9-13. He Is Bound by the Men of Judah, and Delivered to the Philistines.

9-17. Then the Philistines went up--to the high land of Judah.

and spread themselves in Lehi--now El-Lekieh, abounding with limestone cliffs; the sides of which are perforated with caves. The object of the Philistines in this expedition was to apprehend Samson, in revenge for the great slaughter he had committed on their people. With a view of freeing his own countrymen from all danger from the infuriated Philistines, he allowed himself to be bound and surrendered a fettered prisoner into their power. Exulting with joy at the near prospect of riddance from so formidable an enemy, they went to meet him. But he exerted his superhuman strength, and finding a new (or moist) jawbone of an ass, he laid hold of it, and with no other weapon, slew a thousand men at a place which he called Ramath-lehi--that is, "the hill of the jawbone."