'Hyssop' in the Bible

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

A person who is clean is to take hyssop, dip it in the water, and sprinkle the tent, all the furnishings, and the people who were there. He is also to sprinkle the one who touched a bone, a grave, a corpse, or a person who had been killed.