Numbers 6:3

“He shall separate [himself] from wine, etc.] Old or new, as Ben Gersom; from drinking it, any of it: not only from an immoderate and excessive drinking of it, which every man should abstain from, but from drinking of it at all, that he might be more free and fit for the service of God; for prayer, meditation, reading the Scriptures, and attendance on the worship of God in all its branches, and be less liable to temptations to sin; for, as Aben Ezra observes, many transgressions are occasioned by wine, which, if drank immoderately, intoxicates the mind, and unfits for religious duties, excites lust, and leads on to many vices: and strong drink; any other intoxicating and inebriating liquor…”

“The law of the Nazarite is appropriately added to other enactments which concern the sanctity of the holy nation. That sanctity found its highest expression in the Nazarite vow, which was the voluntary adoption for a time of obligations to high and strict modes of self-dedication resembling, and indeed in some particulars exceeding, those under which the priests were placed. The present enactments do not institute a new kind of observance, but only regulate one already familiar to the Israelites Numbers 6:2. Numbers 6:2 A Nazarite - Strictly, Nazirite. This term signifies “separated” i. e., as the words following show, “unto God.” It became a technical term at an early date; compare Judges…”

“Nor eat grapes - Which was forbidden him for greater caution to keep him at the farther distance from wine. Numbers 6:4”

“6:3-4 The law required priests to avoid drinking wine before they served in the Tabernacle (Lev 10:9); the Nazirite vow allowed non-Levites to broaden that law to include all places, all times, and anything that comes from a grapevine.”

“Besides the religious nature of this institution, it seems to have been partly of a civil and prudential use. The sobriety and temperance which the Nazarites were obliged to observe were very conducive to health. Accordingly, they were celebrated for their fair and ruddy complexion; being said to be both whiter than milk and more ruddy than rubies ( Lam 4:7); the sure signs of a sound and healthy constitution. It may here be observed, that when God intended to raise up Samson, by his strength of body, to scourge the enemies of Israel, he ordered, that from his infancy he should drink no wine, but live by the rule of the Nazarites, because that would greatly contribute to make him strong and…”