Numbers 19:6

Christian Standard Bible Anglicised

The priest is to take cedar wood, hyssop, and crimson yarn,  and throw them onto the fire where the cow is burning.

Cross References

Leviticus 14:4

the priest will order that two live clean birds,  cedar wood,  scarlet  yarn, and hyssop  be brought for the one who is to be cleansed.

Leviticus 14:49

He is to take two birds, cedar wood, scarlet yarn, and hyssop to purify the house,

Leviticus 14:6

He is to take the live bird together with the cedar wood, scarlet yarn, and hyssop, and dip them all into the blood of the bird that was slaughtered over the fresh water.

Isaiah 1:18

‘Come, let’s settle this,’ says the Lord. ‘Though your sins are scarlet, they will be as white as snow; though they are crimson red, they will be like wool.