4-6. wash his flesh with water—Any Israelite who had contracted a defilement of such a nature as debarred him from the enjoyment of his wonted privileges, and had been legally cleansed from the disqualifying impurity, was bound to indicate his state of recovery by the immersion of his whole person in water. Although all ceremonial impurity formed a ground of exclusion, there were degrees of impurity which entailed a longer or shorter period of excommunication, and for the removal of which different rites required to be observed according to the trivial or the malignant nature of the case. A person who came inadvertently into contact with an unclean animal was rendered unclean for a specified period; and then, at the expiry of that term, he washed, in token of his recovered purity. But a leper was unclean so long as he remained subject to that disease, and on his convalescence, he also washed, not to cleanse himself, for the water was ineffectual for that purpose, but to signify that he was clean. Not a single case is recorded of a leper being restored to communion by the use of water; it served only as an outward and visible sign that such a restoration was to be made. The Book of Leviticus abounds with examples which show that in all the ceremonial washings, as uncleanness meant loss of privileges, so baptism with water indicated a restoration to those privileges. There was no exemption; for as the unclean Israelite was exiled from the congregation, so the unclean priest was disqualified from executing his sacred functions in the sanctuary; and in the case of both, the same observance was required—a formal intimation of their being readmitted to forfeited privileges was intimated by the appointed rite of baptism. If any one neglected or refused to perform the washing, he disobeyed a positive precept, and he remained in his uncleanness; he forbore to avail himself of this privilege, and was therefore said to be "cut off" from the presence of the Lord.

     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.

     6, 7. there were certain men, who were defiled by the dead body of a man—To discharge the last offices to the remains of deceased relatives was imperative; and yet attendance on a funeral entailed ceremonial defilement, which led to exclusion from all society and from the camp for seven days. Some persons who were in this situation at the arrival of the first paschal anniversary, being painfully perplexed about the course of duty because they were temporarily disqualified at the proper season, and having no opportunity of supplying their want were liable to a total privation of all their privileges, laid their case before Moses. Jewish writers assert that these men were the persons who had carried out the dead bodies of Nadab and Abihu [Le 10:4, 5].

     8-14. Moses said unto them, Stand still, and I will hear what the Lord will command concerning you—A solution of the difficulty was soon obtained, it being enacted, by divine authority, that to those who might be disqualified by the occurrence of a death in their family circle or unable by distance to keep the passover on the anniversary day, a special license was granted of observing it by themselves on the same day and hour of the following month, under a due attendance to all the solemn formalities. (See on 2Ch 30:2). But the observance was imperative on all who did not labor under these impediments.

     11-22. He that toucheth the dead body of any man shall be unclean—This law is noticed here to show the uses to which the water of separation [Nu 19:9] was applied. The case of a death is one; and as in every family which sustained a bereavement the members of the household became defiled, so in an immense population, where instances of mortality and other cases of uncleanness would be daily occurring, the water of separation must have been in constant requisition. To afford the necessary supply of the cleansing mixture, the Jewish writers say that a red heifer was sacrificed every year, and that the ashes, mingled with the sprinkling ingredients, were distributed through all the cities and towns of Israel.

     13. On the other hand, a legally "unclean" person imparts his uncleanness to any thing, whereas a legally holy thing cannot confer its sanctity on an "unclean" person (Nu 19:11, 13, 22). Legal sanctity is not so readily communicated as legal impurity. So the paths to sin are manifold: the paths to holiness one, and that one of difficult access [GROTIUS]. One drop of filth will defile a vase of water: many drops of water will not purity a vase of filth [MOORE].