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 mocked me these three times and have not told me where your great strength lies.” When she pressured him day after day with her words and pleaded with him, he was annoyed to death. Then [finally] he told her everything that was in his heart and said to her, “A razor has never been used 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.”