Numbers 6:4-5 ▼

4 All the days of his Nazirite vow he shall not eat anything that is produced by the grape vine, from the seeds even to the skin.

5 ‘All the days of his vow as a Nazirite no razor shall pass over his head. He shall be holy until the days are fulfilled for which he dedicated himself as a Nazirite to Yahweh; he shall let the locks of hair on his head grow long.