11 Anyone touching a dead body will be unclean for seven days: 12 On the third day and on the seventh day he is to make himself clean with the water, and so he will be clean: but if he does not do this on the third day and on the seventh day, he will not be clean. 13 Anyone touching the body of a dead man without making himself clean in this way, makes the House of the Lord unclean; and that man will be cut off from Israel: because the water was not put on him, he will be unclean; his unclean condition is unchanged. 14 This is the law when death comes to a man in his tent: everyone who comes into the tent, and everyone who is in the tent, will be unclean for seven days. 15 And every open vessel without a cover fixed on it will be unclean. 16 And anyone touching one who has been put to death with the sword in the open country, or the body of one who has come to his end by a natural death, or a man's bone, or the resting-place of a dead body, will be unclean for seven days. 17 And for the unclean, they are to take the dust of the burning of the sin-offering, and put flowing water on it in a vessel: 18 And a clean person is to take hyssop and put it in the water, shaking it over the tent, and all the vessels, and the people who were there, and over him by whom the bone, or the body of one who has been put to death with the sword, or the body of one who has come to his end by a natural death, or the resting-place was touched. 19 Let the clean person do this to the unclean on the third day and on the seventh day: and on the seventh day he is to make him clean; and after washing his clothing and bathing himself in water, he will be clean in the evening. 20 But the man who, being unclean, does not make himself clean in this way, will be cut off from the meeting of the people, because he has made the holy place of the Lord unclean: the water has not been put on him, he is unclean. 21 This is to be a law for them for ever: he who puts the water on the unclean person is to have his clothing washed; and anyone touching the water will be unclean till evening. 22 Anything touched by the unclean person will be unclean; and any person touching it will be unclean till evening.

Matthew Henry's Commentary on Numbers 19:11-22

Commentary on Numbers 19:11-22

(Read Numbers 19:11-22)

Why did the law make a corpse a defiling thing? Because death is the wages of sin, which entered into the world by it, and reigns by the power of it. The law could not conquer death, nor abolish it, as the gospel does, by bringing life and immortality to light, and so introducing a better hope. 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 work that the righteousness of Christ is applied to us for our cleansing. Those who promise themselves benefit by the righteousness of Christ, while they submit not to the grace and influence of the Holy Spirit, do but deceive themselves; we cannot be purified by the ashes, otherwise than in the running water. What use could there be in these appointments, if they do not refer to the doctrines concerning the sacrifice of Christ? But comparing them with the New Testament, the knowledge to be got from them is evident. The true state of fallen man is shown in these institutions. Here we learn the defiling nature of sin, and are warned to avoid evil communications.