Numbers 6:2-7

2“Speak to the Israelites and tell them: A man or a woman may make a special vow to live as a Nazirite dedicated to the Lord.

3Nazirites must never drink wine, liquor, vinegar made from wine or liquor, or any kind of grape juice, and they must never eat fresh grapes or raisins.

4As long as they are Nazirites, they must never eat anything that comes from a grapevine, not even grape seeds or skins.

5“As long as they are under the Nazirite vow, no razor may touch their heads. During the entire time that they are dedicated to the Lord as Nazirites, they will be holy. They must let their hair grow long.

6While they are dedicated to the Lord as Nazirites, they must never go near a dead body.

7Even if their own father, mother, brother, or sister dies, they must not make themselves unclean  by going near them. Nazarites show their vow to God with their long hair.