Judges 16:7-9

16:7 Samson said to her, “If they tie me up with seven fresh bowstrings that have not been dried, I will become weak and be just like any other man.” 16:8 So the rulers of the Philistines brought her seven fresh bowstrings which had not been dried and they tied him up with them. 16:9 They hid in the bedroom and then she said to him, “The Philistines are here, Samson!” He snapped the bowstrings as easily as a thread of yarn snaps when it is put close to fire. The secret of his strength was not discovered.