Speak unto the children of Israel, and say unto them, When either man or woman shall separate themselves to vow a vow of a {a} Nazarite, to separate themselves unto the LORD:

(a) Who separated themselves from the world, and dedicated themselves to God: a figure which was accomplished in Christ.

Wesley's Notes

6:2 Man or woman - For both sexes might make this vow, if they were free and at their own disposal: otherwise their parents or husbands could disannul the vow. A vow of a Nazarite - Whereby they sequestered themselves from worldly employments and enjoyments, that they might entirely consecrate themselves to God's service, and this either for their whole lifetime, or for a less and limited space of time.

King James Translators' Notes

to separate...: or, to make themselves Nazarites

Scofield Reference Notes

[2] Nazarite

The Nazarite (more accurately Nazirite, one separated) was a person of either sex separated wholly unto the Lord. Abstention from wine, the symbol of mere natural joy Ps 104:15 was the expression of a devotedness which found all its joy in the Lord (cf) Ps 87:7 97:12 Hab 3:18 Phile 3:1,3 4:4,10. The long hair, naturally a reproach to man 1Cor 11:14 was at once the visible sign of the Nazarite's separation, and of his willingness to bear reproach for Jehovah's sake. The type found its perfect fulfilment in Jesus, who was "holy, harmless, undefiled and separate from sinners" Heb 7:26 who was utterly separated unto the Father Jn 1:18 6:38 who allowed no mere natural claim to hinder or divert Him. Mt 12:46-50.

Jamieson-Fausset-Brown Bible Commentary

2-8. 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 (Nu 30:4), and for a limited period-usually a month or a lifetime (Jud 13:5; 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 (Le 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.

Matthew Henry's Concise Commentary

6:1-21 The word Nazarite signifies separation. Some were appointed of God, before their birth, to be Nazarites all their days, as Samson and John the Baptist. But, in general, it was a vow of separation from the world and devotedness to the services of religion, for a limited time, and under certain rules, which any person might make if they pleased. A Nazarite is spoken of as well known; but his obligation is brought to a greater certainty than before. That the fancies of superstitious men might not multiply the restraints endlessly, God gives them rules. They must not drink wine or strong drink, nor eat grapes. Those who separate themselves to God, must not gratify the desires of the body, but keep it under. Let all Christians be very moderate in the use of wine and strong drink; for if the love of these once gets the mastery of a man, he becomes an easy prey to Satan. The Nazarites were to eat nothing that came of the vine; this may teach the utmost care to avoid sin, and all that borders upon it, and leads to it, or may be a temptation to us. They must not cut their hair. They must neither poll their heads, nor shave their beards; this was the mark of Samson being a Nazarite. This signified neglect of the body, and of the ease and ornament of it. Those who separate themselves to God, must keep their consciences pure from dead works, and not touch unclean things. All the days of their separation they must be holy to the Lord. This was the meaning of those outward observances, and without this they were of no account. No penalty or sacrifice was appointed for those who wilfully broke their vow of being Nazarites; they must answer another day for such profane trifling with the Lord their God; but those were to be relieved who did not sin wilfully. There is nothing in Scripture that bears the least resemblance to the religious orders of the church of Rome, except these Nazarites. But mark the difference, or rather how completely opposed! The religious of that church are forbidden to marry; but no such restriction is laid upon the Nazarites. They are commanded to abstain from meats; but the Nazarites might eat any food allowed other Israelites. They are not generally forbidden wine, not even on their fasting days; but the Nazarites might not have wine at any time. Their vow is lasting, even to the end of their lives; the Nazarites' vow was only for a limited time, at their own will; and in certain cases not unless allowed by husbands or parents. Such a thorough difference there is between rules of man's invention and those directed in Scripture, Let us not forget that the Lord Jesus is not only our Surety, but also our example. For his sake we must renounce worldly pleasures, abstain from fleshy lusts, be separate from sinners, make open profession of our faith, moderate natural affections, be spiritually-minded, and devoted to God's service, and desirous to be an example all around us.