13, 14. then he shall number to himself seven days for his cleansing—Like a leprous person he underwent a week's probation, to make sure he was completely healed. Then with the sacrifices prescribed, the priest made an atonement for him, that is, offered the oblations necessary for the removal of his ceremonial defilement, as well as the typical pardon of his sins.

     Le 15:19-33. UNCLEANNESS OF WOMEN.

     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.

     12. He shall purify himself . . . the third day—The necessity of applying the water on the third day is inexplicable on any natural or moral ground; and, therefore, the regulation has been generally supposed to have had a typical reference to the resurrection, on that day, of Christ, by whom His people are sanctified; while the process of ceremonial purification being extended over seven days, was intended to show that sanctification is progressive and incomplete till the arrival of the eternal Sabbath. Every one knowingly and presumptuously neglecting to have himself sprinkled with this water was guilty of an offense which was punished by excommunication.