Numbers 19:6

19:6 And the priest must take cedar wood, hyssop, and scarlet wool and throw them into the midst of the fire where the heifer is burning.

Leviticus 14:6

14:6 Then he is to take the live bird along with the piece of cedar wood, the scrap of crimson fabric, and the twigs of hyssop, and he is to dip them and the live bird in the blood of the bird slaughtered over the fresh water,

Isaiah 1:18

1:18 Come, let’s consider your options,” says the Lord.

“Though your sins have stained you like the color red,

you can become white like snow;

though they are as easy to see as the color scarlet,

you can become white like wool.

Revelation 1:5

1:5 and from Jesus Christ – the faithful witness, the firstborn from among the dead, the ruler over the kings of the earth. To the one who loves us and has set us free from our sins at the cost of his own blood