What does Judges 16:17 mean?

Finally, Samson told her everything. He said, 'No razor has ever touched my head, because I’ve been dedicated to God since before I was born. If my hair is cut, I’ll lose my strength and be as weak as anyone else.' Judges 16:17 - Modern Text Bible

(Samson finally gives in and reveals the real reason for his strength: his uncut hair, which is a sign of his lifelong dedication to God.)