Leviticus 14:52
And he shall cleanse the house with the blood of the bird, and with the running water, and with the living bird, and with the cedar wood, and with the hyssop, and with the scarlet:
Cross-reference
Hebrews 9:22
Related theme
Hebrews 9:22 affirms necessity of blood for purification, directly tying to the blood and water used here.