Judges 16:18-22

When 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.

And 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.

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 departed from him.

Then the Philistines seized him and gouged out his eyes; and they brought him down to Gaza and restrained him with bronze chains, and he became a grinder in the prison.

However, the hair of his head began to grow again after it was shaved off.