'Nazirite' in the Bible

for lo, you shall conceive and bear a son. No razor shall come upon his head, for the boy shall be a Nazirite to God from birth; and he shall begin to deliver Israel from the hand of the Philistines."

but he said to me, 'Behold, you shall conceive and bear a son; so then drink no wine or strong drink, and eat nothing unclean, for the boy shall be a Nazirite to God from birth to the day of his death.'"

And he told her all his mind, 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 I be shaved, then my strength will leave me, and I shall become weak, and be like any other man."