Judges 16:15-17

Then she said to him, “How can you say, ‘I love you,’ when your heart is not with me? You have deceived me these three times and have not told me where your great strength is.” It came about when she pressed him daily with her words and urged him, that his soul was annoyed to death. So 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 Nazirite 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.”