Numbers 19:19

19 And in this manner a clean man shall cleanse an unclean thing, in the third (day) and in the seventh day; and he shall be cleansed in the seventh day. And he shall wash himself, and his clothes, and he shall be unclean till to eventide. (And in this manner a clean man shall sprinkle an unclean thing on the third day, and on the seventh day; and it shall be clean on the seventh day. And then he shall wash himself, and his clothes, but he shall be unclean until the evening.)

Numbers 19:19 Meaning and Commentary

Numbers 19:19

And the clean person shall sprinkle upon the unclean
The clean priest shall sprinkle upon the unclean man, as the Targum of Jonathan; that is, he shall sprinkle the water of purification upon him that is unclean in any of the above ways:

on the third day, and on the seventh day; (See Gill on Numbers 19:12),

and on the seventh day he shall purify himself;
either the unclean person, who shall perfect his purification, as Jarchi interprets it, that is, by doing what follows; or else the clean person, who becomes in some measure unclean, by sprinkling and touching the water of separation, as appears from ( Numbers 19:21 ) as the priest that sprinkled the blood of the heifer, and the man that burnt it and gathered its ashes, ( Numbers 19:7-9 )

and wash his clothes, and bathe himself in water, and shall be clean at
even;
in like manner as the man that let go the goat into the wilderness, ( Leviticus 16:26 ) .

Numbers 19:19 In-Context

17 And they shall take of the ashes of the burning, and of the sin (offering), that is, of the cow offered for sin, and they shall put quick waters into a vessel, upon those ashes; (And they shall take some of the ashes from the burning of that sin offering, that is, some of the ashes of the cow offered for sin, and they shall put those ashes into a vessel with fresh water;)

18 in which when a clean man hath dipped hyssop, he shall sprinkle therewith the tent, and all the purtenance of the household, and the men also defouled with such defouling (and also anyone defiled with such defilement).

19 And in this manner a clean man shall cleanse an unclean thing, in the third (day) and in the seventh day; and he shall be cleansed in the seventh day. And he shall wash himself, and his clothes, and he shall be unclean till to eventide. (And in this manner a clean man shall sprinkle an unclean thing on the third day, and on the seventh day; and it shall be clean on the seventh day. And then he shall wash himself, and his clothes, but he shall be unclean until the evening.)

20 If any man is not cleansed by this custom, (or rite,) the soul of him shall perish from the midst of the church (that person shall be cut off, or shall be put out, from among the congregation); for he defouleth the saintuary of the Lord, and he is not sprinkled with the water of cleansing.

21 This behest shall be a lawful thing everlasting. Also he that shall sprinkle the waters (of cleansing) shall wash his clothes; each man that toucheth the waters of cleansing, shall be unclean till to eventide. (This rule shall be an everlasting law. He who shall sprinkle the water of cleansing shall wash his clothes; and anyone who toucheth the water of cleansing shall be unclean until the evening.)