Numbers 6:3-5

New Revised Standard Version Catholic Edition

³ they shall separate themselves from wine and strong drink; they shall drink no wine vinegar or other vinegar, and shall not drink any grape juice or eat grapes, fresh or dried. ⁴ All their days as nazirites^[a] they shall eat nothing that is produced by the grapevine, not even the seeds or the skins.

⁵ All the days of their nazirite vow no razor shall come upon the head; until the time is completed for which they separate themselves to the Lord, they shall be holy; they shall let the locks of the head grow long.