“And the clean person shall sprinkle it on the unclean on the third day and on the seventh day. Thus on the seventh day he shall cleanse him, and he shall wash his clothes and bathe himself in water, and at evening he shall be clean.”
On the third day and on the seventh day: the first wash and the second wash.
“I baptize you with water for repentance, but he who is coming after me is mightier than I, whose sandals I am not worthy to carry. He will baptize you with the Holy Spirit and fire.”
“And I will show wonders in the heavens and on the earth, blood and fire and columns of smoke.”
“Blessed and holy is the one who shares in the first resurrection! Over such the second death has no power, but they will be priests of God and of Christ, and they will reign with him for a thousand years.”
And the clean person shall sprinkle it on the unclean
“Therefore, confess your sins to one another and pray for one another, that you may be healed. The prayer of a righteous person has great power as it is working.”
Thus on the seventh day he shall cleanse him,
“Then I saw another sign in heaven, great and amazing, seven angels with seven plagues, which are the last, for with them the wrath of God is finished. And I saw what appeared to be a sea of glass mingled with fire—and also those who had conquered the beast and its image and the number of its name, standing beside the sea of glass with harps of God in their hands. And they sing the song of Moses, the servant of God, and the song of the Lamb, saying, “Great and amazing are your deeds, O LORD God the Almighty! Just and true are your ways, O King of the nations! Who will not fear, O LORD, and glorify your name? For you alone are holy. All nations will come and worship you, for your righteous acts have been revealed.”
And he shall wash his clothes and bathe himself in water, and at evening he shall be clean.
“And everyone who thus hopes in him purifies himself as he is pure.”
1 John 3:3