Judges 16:7-9

7And Samson said to her, If they bind me with seven new cords that were never dried, then shall I be weak, and be as another man.12 8Then the lords of the Philistines brought to her seven new cords which had not been dried, and she bound him with them.3 9Now there were men lying in wait, abiding with her in the chamber. And she said to him, The Philistines are upon thee, Samson. And he broke the cords, as a string of a wick is broken when it toucheth the fire. So his strength was not known.4