Leviticus 14:51

and take the cedar wood and the hyssop, and the crimson and the living bird, and dip them in the blood of the slain bird, and in the living water, - and sprinkle the house seven times;

Psalm 51:7

Wilt thou cleanse me from sin with hyssop, That I may be pure? Wilt thou wash me, That I may be whiter, than snow?

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