Among the Jews the abundance of the hair was considered to betoken physical strength and perfection (compare 2 Samuel 14:25-26), and baldness was regarded as a grave blemish (compare Leviticus 21:20 note, Leviticus 13:40 ff; 2 Kings 2:23; Isaiah 3:24). Thus, the free growth of the hair on the head of the Nazarite represented the dedication of the man with all his strength and powers to the service of God.

There shall no razor come upon his head - The vow of the Nazarite consisted in the following particulars: -

1. He consecrated himself in a very especial and extraordinary manner to God.

2. This was to continue for a certain season, probably never less than a whole year, that he might have a full growth of hair to burn in the fire which is under the sacrifice of the peace-offering, Numbers 6:18.

3. During the time of his separation, or nazarate, he drank no wine nor strong drink; nor used any vinegar formed from any inebriating liquor, nor ate the flesh or dried grapes, nor tasted even the kernels or husks of any thing that had grown upon the vine.

4. He never shaved his head, but let his hair grow, as the proof of his being in this separated state, and under vows of peculiar austerity.

5. He never touched any dead body, nor did any of the last offices, even to his nearest kin; but was considered as the priests, who were wholly taken up with the service of God, and regarded nothing else.

6. All the days of his separation he was holy, Numbers 6:8.

During the whole time he was to be incessantly employed in religious acts.

All the days of the vow of his separation,.... Be the time he has vowed to be a Nazarite a week, a, month, or more, even a thousand days, but not less than thirty, as Ben Gersom observes:

there shall no razor come upon his head; he might not shave his beard, nor cut off his locks, and shave his head, nor cut short his locks with a pair of scissors, nor any with anything by which the hair may be removed, as Ben Gersom; nor pluck off his hair with his hands, as Maimonides says (x); but let it grow as long as it would during the time of his separation, which is expressed in the latter part of the verse:

until the days be fulfilled, in the which he separateth himself unto the Lord; to his service, to which he wholly addicted himself as long as his vow continued:

he shall be holy; separate from other men, and their practices and customs, and spend his time in holy exercises, in a religious way, and abstain from what might be a temptation to sin, or in the least hinder him in his acts of devotion:

and shall let the locks of his hair grow; two reasons Fagius gives of this part of the law, the one is, because of the mystery of it; letting the hair grow signified an increase of virtue or grace, as Samson's strength was increased and became very great while his hair was not cut; and so spiritual Nazarites, while they are in the way of their duty, grow in grace, and in knowledge of God and Christ, and all divine things, and grow stronger and stronger in the Lord, and in the power of his might; and Ainsworth hints at the same thing, and also supposes it might be an emblem of the subjection of the saints to Christ, as the letting the hair grow was a sign of the woman's subjection to man: the other is, that it was appointed to take the Israelites off of the errors and superstitious they had imbibed in Egypt, by ordering them to perform those rites and ceremonies to the honour of the true God, which they had used in the service of demons; and for this he cites a passage out of Cyrill; but it does not appear, by any good authority, that such a custom obtained among the Egyptians, or any other Gentiles so early; and what were used among them in later times took their rise from hence, and were imitations of this law; though there seems to be no great likeness between this law of Nazariteship and the customs of the Heathens, who used to consecrate their hair to their deities, Apollo, Hercules, Bacchus, Minerva, and Diana: what seems best to agree is what Lucian says (y), who observes, that young men consecrate their beards, and let their hair grow, consecrated from their birth, which they afterwards cut and lay up in vessels in the temple, some of gold, others of silver.

(x) Hilchot Nezirut, c. 5. sect. 11. (y) De Dea Syria.

Secondly, during the whole term of his vow of consecration, no razor was to come upon his head. Till the days were fulfilled which he had consecrated to the Lord, he was to be holy, "to make great the free growth (see Leviticus 10:6) of the hair of his head." The free growth of the hair is called, in Numbers 6:7, "the diadem of his God upon his head," like the golden diadem upon the turban of the high priest (Exodus 29:6), and the anointing oil upon the high priest's head (Leviticus 21:12). By this he sanctified his head (Numbers 6:11) to the Lord, so that the consecration of the Nazarite culminated in his uncut hair, and expressed in the most perfect way the meaning of his vow (Oehler). Letting the hair grow, therefore, was not a sign of separation, because it was the Israelitish custom to go about with the hair cut; nor a practical profession of a renunciation of the world, and separation from human society (Hengstenberg, pp. 190-1); nor a sign of abstinence from every appearance of self-gratification (Baur on Amos 2:11); nor even a kind of humiliation and self-denial (Lightfoot, Carpzov. appar. p. 154); still less a "sign of dependence upon some other present power" (M. Baumgarten), or "the symbol of a state of perfect liberty" (Vitringa, obss. Songs 1, c. 6, 9; cf. Numbers 6:22, Numbers 6:8). The free growth of the hair, unhindered by the hand of man, was rather "the symbol of strength and abundant vitality" (cf. 2 Samuel 14:25-26). It was not regarded by the Hebrews as a sign of sanctity, as Bhr supposes, but simply as an ornament, in which the whole strength and fulness of vitality were exhibited, and which the Nazarite wore in honour of the Lord, as a sign that he "belonged to the Lord, and dedicated himself to His service," with all his vital powers.

(Note: In support of this explanation, Oehler calls to mind those heathen hair-offerings of the Athenian youths, for example (Plut. Thes. c. 5), which were founded upon the idea, that the hair in general was a symbol of vital power, and the hair of the beard a sign of virility; and also more especially the example of Samson, whose hair was not only the symbol, but the vehicle, of the power which fitted him to be the deliverer of his people.)

All the days of the vow of his separation there shall no razor come upon his head: until the days be fulfilled, in the which he separateth himself unto the LORD, he shall be holy, and shall let the locks of the hair of his head grow.

6:5 No razor - Nor scissors, or other instrument to cut off any part of his hair. This was appointed, partly as a sign of his mortification to worldly delights and outward beauty; partly as a testimony of that purity which hereby he professed, because the cutting off the hair was a sign of uncleanness, as appears from Num 6:9, partly that by the length of his hair he might be constantly minded of his vow; and partly that he might reserve his hair entirely for God, to whom it was to be offered. Holy - That is, wholly consecrated to God and his service, whereby he shews that inward holiness was the great thing which God required and valued in these, and consequently in other rites and ceremonies.

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.