What does Judges 15:13 mean?
Samson is in hiding from the Philistines (Judges 15:8). He knows they will be coming for him after what he has done to their people. Not only has he destroyed crops and killed men (Judges 14:19; 15:5), but Samson is also an Israelite. A rebellious member of a conquered nation cannot go unpunished. They have come to even the score with him once and for all (Judges 15:9–12).To accomplish this, Philistine soldiers have threatened to attack the people of Judah if they don't give Samson to them (Judges 15:9–10). A huge group of Israelite men have come to tie Samson up and present him as a captive for the Philistines. They have no interest in going to battle to save Samson, or to free their nation. Samson has agreed to be tied up only if the men of Judah swear not to harm him (Judges 15:11–12).
The men of Judah agree. They promise not to kill Samson. They will hand him over to the Philistines alive and unhurt. Samson allows them to tie him tightly with new ropes. The writer of Judges wants it understood that this was no trick. Samson wasn't tied with old, frayed, brittle ropes. They didn't use ropes Samson provided. The men of Judah weren't helping him by tying him loosely. He was securely bound, using the strongest available method.