Judges 16:17-19

17So he told her all that was in his heart and said to her, “A razor has never come on my head, for I have been a 1Nazirite to God from my mother’s womb. If I am shaved, then my strength will leave me and I will become weak and be like any other man.”

18When Delilah saw that he had told her all that was in his heart, she sent word and called the governors of the Philistines, saying, “Come up once more, for he has told me all that is in his heart.” Then the governors of the Philistines came up to her and brought up the money in their hands. 19And she made him sleep on her knees, and called for a man and had him shave off the seven locks of his head. Then she began to humble him, and his strength left him.