Judges 16:7-9

New King James Version

⁷ And Samson said to her, “If they bind me with seven fresh bowstrings, not yet dried, then I shall become weak, and be like any other man.”

⁸ So the lords of the Philistines brought up to her seven fresh bowstrings, not yet dried, and she bound him with them. ⁹ Now men were lying in wait, staying with her in the room. And she said to him, “The Philistines are upon you, Samson!” But he broke the bowstrings as a strand of yarn breaks when it touches fire. So the secret of his strength was not known.