When either man or woman . . . shall vow a vow of a Nazarite--that is, "a separated one," from a Hebrew word, "to separate." It was used to designate a class of persons who, under the impulse of extraordinary piety and with a view to higher degrees of religious improvement, voluntarily renounced the occupations and pleasures of the world to dedicate themselves unreservedly to the divine service. The vow might be taken by either sex, provided they had the disposal of themselves (Num 30:4), and for a limited period--usually a month or a lifetime (Jdg 13:5; Jdg 16:17). We do not know, perhaps, the whole extent of abstinence they practised. But they separated themselves from three things in particular--namely, from wine, and all the varieties of vinous produce; from the application of a razor to their head, allowing their hair to grow; and from pollution by a dead body. The reasons of the self-restrictions are obvious. The use of wine tended to inflame the passions, intoxicate the brain, and create a taste for luxurious indulgence. The cutting off the hair being a recognized sign of uncleanness (Lev 14:8-9), its unpolled luxuriance was a symbol of the purity he professed. Besides, its extraordinary length kept him in constant remembrance of his vow, as well as stimulated others to imitate his pious example. Moreover, contact with a dead body, disqualifying for the divine service, the Nazarite carefully avoided such a cause of unfitness, and, like the high priest, did not assist at the funeral rites of his nearest relatives, preferring his duty to God to the indulgence of his strongest natural affections.
Speak unto Aaron and unto his sons, saying, On this wise ye shall bless the congregation of Israel, &c.--This passage records the solemn benediction which God appointed for dismissing the people at the close of the daily service. The repetition of the name "Lord" or "Jehovah" three times, expresses the great mystery of the Godhead--three persons, and yet one God. The expressions in the separate clauses correspond to the respective offices of the Father, to "bless and keep us"; of the Son, to be "gracious to us"; and of the Holy Ghost, to "give us peace." And because the benediction, though pronounced by the lips of a fellow man, derived its virtue, not from the priest but from God, the encouraging assurance was added, "I the Lord will bless them."