שופטים, פרק ט״ז, פסוק ח׳

The leaders of the Philistines deliver the fresh bowstrings Samson claimed would drain his legendary strength, setting the stage for a critical test of his honesty. Armed with these supplies, Delilah personally binds him [ביאור שטיינזלץ]. Her immediate goal is to see if his confession about his vulnerability is actually true [מצודת דוד]. To manage this without causing a struggle, she likely frames the binding as a playful game between the two of them, or she simply waits to tie him up while he is fast asleep [ביאור שטיינזלץ].

A crucial aspect of this event is that Delilah acts entirely alone. She specifically avoids bringing in any Philistine men to restrain him. This calculated move reveals her deep caution, as she suspects Samson might be lying. If she allowed the Philistines to tie him and he easily broke free, her betrayal would be undeniable. By keeping the men away and doing the work herself, she ensures that if the experiment fails, Samson will not realize she is actively trying to hand him over to his enemies [אברבנאל].