Judges 16:15-20

15And 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 you have not told me where your great strength lies."

16And when she pressed him hard with her words day after day, and urged him, his soul was vexed to death.

17And he told her all his heart, and said to her, "A razor has never come upon my head, for I have been a Nazirite to God from my mother's womb. If my head is shaved, then my strength will leave me, and I shall become weak and be like any other man."

18When Delilah saw that he had told her all his heart, she sent and called the lords of the Philistines, saying, "Come up again, for he has told me all his heart." Then the lords of the Philistines came up to her and brought the money in their hands.

19She made him sleep on her knees. And she called a man and had him shave off the seven locks of his head. Then she began to torment him, and his strength left him.

20And she said, "The Philistines are upon you, Samson!" And he awoke from his sleep and said, "I will go out as at other times and shake myself free." But he did not know that the Lord had left him.