Judges 16:15-17

15Then Delilah pouted, “How can you tell me, ‘I love you,’ when you don’t share your secrets with me? You’ve made fun of me three times now, and you still haven’t told me what makes you so strong!”

16She tormented him with her nagging day after day until he was sick to death of it.

17Finally, Samson shared his secret with her. “My hair has never been cut,” he confessed, “for I was dedicated to God as a Nazirite from birth. If my head were shaved, my strength would leave me, and I would become as weak as anyone else.”