2. WATER OF PURIFICATION.--The statute of xix. 1-22 is peculiar, and the rites it enjoins are full of symbolism. It is implied that water alone was unable to remove the defilement caused by touching a dead body; but at the same time the taint was so common and might be incurred so far from the sanctuary that sacrifice could not always be exacted. In order to meet the case an animal was to be offered, and the residue of its burning was to be kept for use whenever the defilement of death had to be taken away.
A red heifer was to be chosen, the colour of the animal pointing to the hue of blood. The heifer was to be free from blemish, a type of vigorous and prolific life. The charge of the sacrifice was to be given to Eleazar the priest, for the high-priest himself might not undertake a duty the performance of which caused uncleanness. The ceremonies must take place not only outside the tabernacle court, but outside the camp, that the intensity of the uncleanness to be transferred to the animal and purged by the sacrifice may be clearly understood. The heifer being slain, the priest takes of its blood and sprinkles it towards the tent of meeting seven times, in lieu of the ordinary sprinkling on the altar. The whole animal is then burnt, and while the flame ascends the virtue of the residuent ashes is symbolically increased by certain other elements. These are cedar wood, which was believed to have special medicinal qualities, and also may have been chosen on account of the long life of the tree; some threads of scarlet wool which would represent the arterial blood, instinct with vital power; and hyssop which was employed in purification.
The priest, having presided at the sacrifice, was to wash his clothes in water and bathe his flesh and hold himself unclean till the even. The assistant who fed the fire was in like manner unclean. These were both to withdraw; and one who was clean was to gather the ashes of the burning and, having provided some clean vessel within the camp, he was to store up the purifying ashes for future use by the people. Finally, the person who did this last duty, having become tainted like the others, was to wash his clothes and be unclean for the day. The ashes were to be used by mixing them with water to make "water for pollution"; that is, water to take away pollution. Special care was to be exercised that only living water, or water from a flowing stream, should be used for this purpose. It was to be applied to the defiled person, vessel, or tent, by means of hyssop. But, again, the man who used the water of purification in this way was to wash his clothes and be unclean until even.
Here we have an extra-sacerdotal rite, not of worship--for as ordinarily used there was no prayer to God, nor perhaps even the thought of appeal to God. It was religious, for the sense of defilement belonged to religion; but when under the necessity of the occasion any one applied the water of purification, his sense of acting the priestly part was reduced to the lowest point. The efficacy came through the action of the accredited priest when the heifer was sacrificed, it might be a year previously. So, although provision was made for needs occurring far from the sanctuary, no opening was left for any one to claim the power belonging to the sacerdotal office. And in order to make this still more sure it was enacted (ver. 21), that though the sprinkled water of purification cleansed the unclean, any one who touched it being himself clean should _de facto_ be defiled. The water was declared so sacred that unless in cases where it was really required no one would be disposed to meddle with it. The sanctity of the tabernacle and the priesthood was symbolically carried forth to the most distant parts of the land. All were to be on their guard lest they should incur the judgment of God by abusing that which had ceremonial holiness and power.