Numbers 6:1-3

The Nazirite Vow

And the  Lord spoke to Moses, saying, Speak to the people of Israel and say to them, When either a man or a woman makes a special vow, the vow of a a Nazirite
 Nazirite means one separated, or one consecrated
c to separate himself to the  Lord,
he d shall separate himself from wine and strong drink. He shall drink no vinegar made from wine or strong drink and shall not drink any juice of grapes or eat grapes, fresh or dried.
Copyright information for ESV