And a clean person shall take hyssop and dip in the water, and sprinkle upon the tent and upon all the vessels, and upon the persons that were there, and upon him that touched a bone, or one killed, or one dead, or a grave.

For when Moses had spoken every precept to all the people according to the Law, he took the blood of calves and of goats, with water and scarlet wool and hyssop, and sprinkled both the book, and all the people,

And

For if the blood of bulls and of goats and the ashes of a heifer sprinkling the unclean sanctifies to the purifying of the flesh,

But if we walk in the light, as He is in the light, we have fellowship with one another, and the blood of Jesus Christ His Son cleanses us from all sin.

even from Jesus Christ the faithful Witness, the First-born from the dead and the Ruler of the kings of the earth. To Him who loved us and washed us from our sins in His own blood,

Whiter

Come now, and let us reason together, says Jehovah; though your sins are as scarlet, they shall be as white as snow; though they are red like crimson, they shall be like wool.

that He might sanctify and cleanse it with the washing of water by the Word,

And one of the elders answered, saying to me, Who are these who are arrayed in white robes, and from where do they come?

General references

And whoever touches his bed shall wash his clothes and bathe in water, and be unclean until the evening.

For on that day an atonement shall be made for you, to cleanse you, so that you may be clean from all your sins before Jehovah.

And the priest shall take cedar-wood and hyssop and scarlet, and throw it into the midst of the burning of the heifer.