'Dedicated' in the Bible

Look, you will conceive and have a son. You must never cut his hair, for the child will be dedicated to God from birth. He will begin to deliver Israel from the power of the Philistines."

He said to me, 'Look, you will conceive and have a son. So now, do not drink wine or beer and do not eat any food that will make you ritually unclean. For the child will be dedicated to God from birth till the day he dies.'"

Finally he told her his secret. He said to her, "My hair has never been cut, for I have been dedicated to God from the time I was conceived. If my head were shaved, my strength would leave me; I would become weak, and be just like all other men."