Judges 16:9-11

New Catholic Bible

⁹ There were some men hiding in the room when she cried out to him, “Samson, the Philistines are upon you.” He broke the thongs like a piece of string that snaps when it is close to a flame. Thus, the secret of his strength was not known.

¹⁰ Delilah then said to Samson, “You have mocked me and lied to me. Please, tell me now how you could be tied up.” ¹¹ He answered, “If anyone were to bind me with new ropes that had never been used, then I would become as weak as everyone else.”