49 He then is to purify the house by taking two birds, some cedar wood, scarlet thread, and hyssop. 50 He will slaughter one bird over fresh water in a clay pot. 51 Then he will take the cedar wood, the hyssop, the scarlet thread, and the living bird, dip them in the blood of the killed bird and the fresh water and sprinkle the house seven times, 52 cleansing the house with the blood of the bird, the fresh water, the living bird, the cedar wood, the hyssop, and the scarlet thread. 53 Last of all, he will let the living bird loose outside the city in the open field. He has made atonement for the house; the house is clean.
Matthew Henry's Commentary on Leviticus 14:49-53
Commentary on Leviticus 14:33-53
(Read Leviticus 14:33-53)
The leprosy in a house is unaccountable to us, as well as the leprosy in a garment; but now sin, where that reigns in a house, is a plague there, as it is in a heart. Masters of families should be aware, and afraid of the first appearance of sin in their families, and put it away, whatever it is. If the leprosy is got into the house, the infected part must be taken out. If it remain in the house, the whole must be pulled down. The owner had better be without a dwelling, than live in one that was infected. The leprosy of sin ruins families and churches. Thus sin is so interwoven with the human body, that it must be taken down by death.