Judges 13:5-8

For behold, you shall conceive and give birth to a son. No razor shall come upon his head, for the boy shall be a Nazirite [dedicated] to God from birth; and he shall begin to rescue Israel from the hands of the Philistines.” Then the woman went and told her husband, saying, “A Man of God came to me and his appearance was like the appearance of the Angel of God, very awesome. I did not ask Him where he came from, and he did not tell me his name. But He said to me, ‘Behold, you shall conceive and give birth to a son, and now you shall not drink wine or [any other] intoxicating drink, nor eat anything [ceremonially] unclean, for the boy shall be a Nazirite to God from birth to the day of his death.’ ” Then Manoah pleaded with the LORD and said, “O Lord, please let the Man of God whom You sent come again to us and teach us what we are to do for the boy who is to be born.”