Numbers 19:15

Death made a person ceremonially unclean, and this uncleanness could spread. It could pass to an object or to a place where someone had died (compare Leviticus 15:1–12). This means that anything connected to the dead body could also become unclean. People had to be careful so that impurity did not spread through the camp.

If someone touched a human dead body, that person became ceremonially unclean for seven days (compare Leviticus 21:1–3). This meant a person was not allowed to take part in worship until they were made clean.

To become clean again, the person had to use the water of purification. This water was sprinkled on the third day and again on the seventh day.

This section explains how ordinary Israelites can become ceremonially clean again after touching a corpse and avoid defiling the Tent of Meeting (see 9:4–12; Leviticus 17:15; 21:1–4, 11–12). God's holiness demands that the place of his presence remains pure and separate from pollution (compare 1 Corinthians 6:9–11, 18–20).

when a man dieth in a tent, &c.--The instances adduced appear very minute and trivial; but important ends, both of a religious and of a sanitary nature, were promoted by carrying the idea of pollution from contact with dead bodies to so great an extent. While it would effectually prevent that Egyptianized race of Israelites imitating the superstitious custom of the Egyptians, who kept in their houses the mummied remains of their ancestors, it ensured a speedy interment to all, thus not only keeping burial places at a distance, but removing from the habitations of the living the corpses of persons who died from infectious disorders, and from the open field the unburied remains of strangers and foreigners who fell in battle.

Directions are here given concerning the use and application of the ashes which were prepared for purification. they were laid up to be laid out; and therefore, though now one place would serve to keep them in, while all Israel lay so closely encamped, yet it is probable that afterwards, when they came to Canaan, some of these ashes were kept in every town, for there would be daily use for them. Observe,
I. In what cases there needed a purification with these ashes. No other is mentioned here than the ceremonial uncleanness that was contracted by the touch of a dead body, or of the bone or grave of a dead man, or being in the tent or house where a dead body lay, Num 19:11, Num 19:14-16. This I look upon to have been one of the greatest burdens of the ceremonial law, and one of the most unaccountable. He that touched the carcase of an unclean beast, or any living man under the greatest ceremonial uncleanness, was made unclean by it only till the evening, and needed only common water to purify himself with; but he that came near the dead body of man, woman, or child, much bear the reproach of his uncleanness seven days, must twice be purified with the water of separation, which he could not obtain without trouble and charge, and till he was purified must not come near the sanctuary upon pain of death.
1. This was strange, considering, (1.) that whenever any died (and we are in deaths oft) several persons must unavoidable contract this pollution, the body must be stripped, washed, wound up, carried out, and buried, and this could not be done without many hands, and yet all defiled, which signifies that in our corrupt and fallen state there is none that lives and sins not; we cannot avoid being polluted by the defiling world we pass through, and we offend daily, yet the impossibility of our being sinless does not make sin the less polluting. (2.) that taking care of the dead, to see them decently buried, is not only necessary, but a very good office, and an act of kindness, both to the honour of the dead and the comfort of the living, and yet uncleanness was contracted by it, which intimates that the pollutions of sin mix with and cleave to our best services. There is not a just man upon earth that doeth good and sinneth not; we are apt some way or other to do amiss even in our doing good. (3.) That this pollution was contracted by what was done privately in their own houses, which intimates (as bishop Patrick observes) that God sees what is done in secret, and nothing can be concealed from the divine Majesty. (4.) This pollution might be contracted, and yet a man might never know it, as by the touch of a grave which appeared not, of which our Saviour says, Those that walk over it are not aware of it (Luk 11:44), which intimates the defilement of the conscience by sins of ignorance, and the cause we have to cry out, "Who can understand his errors?" and to pray, "Cleanse us from secret faults, faults which we ourselves do not see ourselves guilty of."
2. But why did the law make a dead corpse such a defiling thing? (1.) Because death is the wages of sin, entered into the world by it, and reigns by the power of it. Death to mankind is another thing from what it is to other creatures: it is a curse, it is the execution of the law, and therefore the defilement of death signifies the defilement of sin. (2.) Because the law could not conquer death, nor abolish it and alter the property of it, as the gospel does by bringing life and immortality to light, and so introducing a better hope. Since our Redeemer was dead and buried, death is no more destroying to the Israel of God, and therefore dead bodies are no more defiling; but while the church was under the law, to show that it made not the comers thereunto perfect, the pollution contracted by dead bodies could not but form in their minds melancholy and uncomfortable notions concerning death, while believers now through Christ can triumph over it. O grave! where is thy victory? Where is thy pollution?
II. How the ashes were to be used and applied in these cases. 1. A small quantity of the ashes must be put into a cup of spring water, and mixed with the water, which thereby was made, as it is here called, a water of separation, because it was to be sprinkled on those who were separated or removed from the sanctuary by their uncleanness. As the ashes of the heifer signified the merit of Christ, so the running water signified the power and grace of the blessed Spirit, who is compared to rivers of living water; and it is by his operation that the righteousness of Christ is applied to us for our cleansing. Hence we are said to be washed, that is, sanctified and justified, not only in the name of the Lord Jesus, but by the Spirit of our God, Co1 6:11; Pe1 1:2. Those that promise themselves benefit by the righteousness of Christ, while they submit not to the grace and influence of the Spirit, do but deceive themselves, for we cannot put asunder what God has joined, nor be purified by the ashes otherwise than in the running water. 2. This water must be applied by a bunch of hyssop dipped in it, with which the person or thing to be cleansed must be sprinkled (Num 19:18), in allusion to which David prays, Purge me with hyssop. Faith is the bunch of hyssop wherewith the conscience is sprinkled and the heart purified. Many might be sprinkled at once, and the water with which the ashes were mingled might serve for many sprinklings, till it was all spent; and a very little lighting upon a man served to purify him, if done with that intention. In allusion to this application of the water of separation by sprinkling, the blood of Christ is said to be the blood of sprinkling (Heb 12:24), and with it were are said to be sprinkled from an evil conscience (Heb 10:22), that is, we are freed from the uneasiness that arises from a sense of our guilt. And it is foretold that Christ, by his baptism, shall sprinkle many nations, Isa 52:15. 3. The unclean person must be sprinkled with this water on the third day after his pollution, and on the seventh day, Num 19:12-19. The days were reckoned (we may suppose) from the last time of his touching or coming near the dead body; for he would not begin the days of his cleansing while he was still under a necessity of repeating the pollution; but when the dead body was buried, so that there was no further occasion of meddling with it, then he began to reckon his days. Then, and then only, we may with comfort apply Christ's merit to our souls, when we have forsaken sin, and cease all fellowship with the unfruitful works of death and darkness. The repetition of the sprinkling teaches us often to renew the actings of repentance and faith, wash as Naaman, seven times; we need to do that often which is so necessary to be well done. 4. Though the pollution contracted was only ceremonial, yet the neglect of the purification prescribed would turn into moral guilt: He that shall be unclean and shall not purify himself, that soul shall be cut off, Num 19:20. Note, It is a dangerous thing to contemn divine institutions, though they may seem minute. A slight wound, if neglected, may prove fatal; a sin we call little, if not repented of, will be our ruin, when great sinners that repent shall find mercy. Our uncleanness separates us from God, but it is our being unclean and not purifying ourselves that will separate us for ever from him: it is not the wound that is fatal, so much as the contempt of the remedy. 5. Even he that sprinkled the water of separation, or touched it, or touched the unclean person, must be unclean till the evening, that is, must not come near the sanctuary on that day, Num 19:21, Num 19:22. Thus God would show them the imperfection of those services, and their insufficiency to purify the conscience, that they might look for the Messiah, who in the fulness of time should by the eternal Spirit offer himself without spot unto God, and so purge our consciences from dead works (that is, from sin, which defiles like a dead body, and is therefore called a body of death), that we may have liberty of access to the sanctuary, to serve the living God with living sacrifices.

Whosoever toucheth the dead body. The severity of. the capital punishment shews how very pleasing to God is purity. If any one bad forgotten to sprinkle himself on the third or the seventh day, he might redeem his negligence by a prolongation of the term, because he only postponed his purification to another day; but it was a capital crime to enter the sanctuary in his uncleanness, since thus holy and profane things would be mixed together, nay, the altar would have been polluted as well as the whole service of God. But indeed the act of touching a dead body was of slight importance, nor was it to be deemed an atrocious crime; but here the external defilement is not regarded in itself, as if God were wroth on account of a stain contracted by the performance of a pious duty. [25] Rather must the object of the ceremony be considered, for God designed by these rudiments to teach the Israelites, like children, that if any one should pollute sacred things by his impurity, he would by no means be tolerated in this audacity. In this then consisted the religious import of the transaction, that the worship of God was too precious for the Israelites to be permitted to contaminate it with impunity. Whence we gather that the punishment was denounced as against sacrilege. In sum, it comes to this, that God is not duly worshipped except with a sincere heart and pure hands; and that if any pollution be contracted, there is need of expiation before a free access is re-opened to holy things. But it must be remarked as to the contact, that it was accounted the same thing, whether the corpse lay in a field or a house; whilst, if any one died in a tent, men were polluted by merely entering it, and likewise vessels without covers thus became unclean.

And every open vessel,.... An earthen one, as the Targum of Jonathan; and so Jarchi interprets it; and Maimonides (r) observes, that this is only to be understood of an earthen vessel:

which hath no covering bound upon it; a linen or a woollen cloth wrapped and tied about it:

is unclean; the air of the house getting into it by its being uncovered.

(r) In Misn. Cholin, c. 1. sect. 6.

Every open vessel, because it receives the air of the tent, by which it is ceremonially polluted. Compare ,33.

Use of the Water of Purification. - The words in Num 19:10, "And it shall be to the children of Israel, and to the stranger in the midst of them, for an everlasting statute," relate to the preparation and application of the sprinkling water, and connect the foregoing instructions with those which follow. - Num 19:1-13 contain the general rules for the use of the water; Num 19:14-22 a more detailed description of the execution of those rules.
Num 19:11-13
Whoever touched a corpse, "with regard to all the souls of men," i.e., the corpse of a person, of whatever age or sex, was unclean for seven days, and on the third and seventh day he was to cleanse himself (התחטּא, as in Num 8:21) with the water (בּו refers, so far as the sense is concerned, to the water of purification). If he neglected this cleansing, he did not become clean, and he defiled the dwelling of Jehovah (see at Lev 15:31). Such a man was to be cut off from Israel (vid., at Gen 17:14).
Num 19:14-16
Special instructions concerning the defilement. If a man died in a tent, every one who entered it, or who was there at the time, became unclean for seven days. So also did every "open vessel upon which there was not a covering, a string," i.e., that had not a covering fastened by a string, to prevent the smell of the corpse from penetrating it. פּתיל, a string, is in apposition to צמיד, a band, or binding (see Ges. 113; Ewald, 287, e.). This also applied to any one in the open field, who touched a man who had either been slain by the sword or had died a natural death, or even a bone (skeleton), or a grave.
Num 19:17-20
Ceremony of purification. They were to take for the unclean person some of the dust of the burning of the cow, i.e., some of the ashes obtained by burning the cow, and put living, i.e., fresh water (see Lev 14:5), upon it in a vessel. A clean man was then to take a bunch of hyssop (see Exo 12:22), on account of its inherent purifying power, and dip it in the water, on the third and seventh day after the defilement had taken place, and to sprinkle the tent, with the vessels and persons in it, as well as every one who had touched a corpse, whether a person slain, or one who had died a natural death, or a grave; after which the persons were to wash their clothes and bathe, that they might be clean in the evening. As the uncleanness in question is held up as the highest grade of uncleanness, by its duration being fixed at seven days, i.e., an entire week, so the appointment of a double purification with the sprinkling water shows the force of the uncleanness to be removed; whilst the selection of the third and seventh days was simply determined by the significance of the numbers themselves. In Num 19:20, the threat of punishment for the neglect of purification is repeated from Num 19:13, for the purpose of making it most emphatic.
Num 19:21-22
This also was to be an everlasting statute, that he who sprinkled the water of purification, or even touched it (see at Num 19:7.), and he who was touched by a person defiled (by a corpse), and also the person who touched him, should be unclean till the evening, - a rule which also applied to other forms of uncleanness.