4. Mose 19:11

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 imp…

19:11-19 Coming into contact with a human corpse produced ritual impurity for seven days (cp. Lev 21:1-3). The remedy was the water of purification, applied on the third and seventh days.