Judges 16:14

11 And he said to her, If they only put round me new thick cords which have never been used, then I will become feeble and will be like any other man.

12 So Delilah took new thick cords, knotting them tightly round him, and said to him, The Philistines are on you, Samson. And men were waiting secretly in the inner room. And the cords were broken off his arms like threads.

13 Then Delilah said to Samson, Up to now you have made sport of me with false words; now say truly, how may you be put in bands? And he said to her, If you get the seven twists of my hair worked into the cloth you are making and fixed with the pin, I will become feeble and will be like any other man.

14 So while he was sleeping she got the seven twists of his hair worked into her cloth and fixed with the pin, and said to him, The Philistines are on you, Samson. Then awaking from his sleep, he got up quickly, pulling up cloth and machine together.

15 And she said to him, Why do you say you are my lover when your heart is not mine? Three times you have made sport of me, and have not made clear to me the secret of your great strength.

16 So day after day she gave him no peace, for ever questioning him till his soul was troubled to death.

17 And opening all his heart to her, he said to her, My head has never been touched by a blade, for I have been separate to God from the day of my birth: if my hair is cut off, then my strength will go from me and I will become feeble, and will be like any other man.