Commentators note that the ritual for cleansing a house mirrors the one for cleansing a healed person, using the same elements: bird's blood, running water, cedar, hyssop, and scarlet thread. This repetition emphasizes a consistent principle of purification in God's law, whether applied to a person or their dwelling. The main difference, as one scholar points out, is the absence of personal sacrifices, which were unique to an individual's atonement.