Judges 16:17-19

17he told her the whole truth and said to her, “My hair has never been cut, because I am a Nazirite to God from birth. If I am shaved, my strength will leave me, and I will become weak and be like any other man.”

18When Delilah realized that he had told her the whole truth, she sent this message to the Philistine leaders: “Come one more time, for he has told me the whole truth.” The Philistine leaders came to her and brought the silver with them.

19Then she let him fall asleep on her lap and called a man to shave off the seven braids on his head. In this way, she made him helpless, and his strength left him.