This is the law concerning the leprosy in a house. Now that they were in the wilderness they dwelt in tents, and had no houses, and therefore the law is made only an appendix to the former laws concerning the leprosy, because it related, not to their present state, but to their future settlement.
The leprosy in a house is as unaccountable as the leprosy in a garment; but, if we see not what natural causes of it can be assigned, we may resolve it into the power of the God of nature, who here says, I put the leprosy in a house (Leviticus 14:34), as his curse is said to enter into a house, and consume it with the timber and stones thereof, Zechariah 5:4.
Now, 1. It is supposed that even in Canaan itself, the land of promise, their houses might be infected with a leprosy. Though it was a holy land, this would not secure them from this plague, while the inhabitants were many of them so unholy.
Thus a place and a name in the visible church will not secure wicked people from God's judgments. 2. It is likewise taken for granted that the owner of the house will make the priest acquainted with it, as soon as he sees the least cause to suspect the leprosy in his house: It seemeth to me there is as it were a plague in the house, Leviticus 14:35.
Sin, where that reigns in a house, is a plague there, as it is in a heart. And masters of families should be aware and afraid of the first appearance of gross sin in their families, and put away the iniquity, whatever it is, far from their tabernacles, Job 22:23.
They should be jealous with a godly jealousy concerning those under their charge, lest they be drawn into sin, and take early advice, if it but seem that there is a plague in the house, lest the contagion spread, and many be by it defiled and destroyed.
3. If the priest, upon search, found that the leprosy had got into the house, he must try to cure it, by taking gout that part of the building that was infected, Leviticus 14:40-41. This was like cutting off a gangrened limb, for the preservation of the rest of the body.
Corruption should be purged out in time, before it spread; for a little leaven leaveneth the whole lump. If thy right hand offend thee, cut it off. 4. If yet it remained in the house, the whole house must be pulled down, and all the materials carried to the dunghill, Leviticus 14:44-45.
The owner had better be without a dwelling than live in one that was infected. Note, The leprosy of sin, if it be obstinate under the methods of cure, will at last be the ruin of families and churches.
If Babylon will not be healed, she shall be forsaken and abandoned, and (according to the law respecting the leprous house), they shall not take of her a stone for a corner, nor a stone for foundations, Jeremiah 51:9.
The remainders of sin and corruption in our mortal bodies are like this leprosy in the house; after all our pains in scraping and plastering, we shall never be quite clear of it, till the earthly house of this tabernacle be dissolved and taken down; when we are dead we shall be free from sin, and not till then, Romans 6:7.
5. If the taking out the infected stones cured the house, and the leprosy did not spread any further, then the house must be cleansed; not only aired, that it might be healthful, but purified from the ceremonial pollution, that it might be fit to be the habitation of an Israelite.
The ceremony of its cleansing was much the same with that of cleansing a leprous person, Leviticus 14:49, &c. This intimated that the house was smitten for the man's sake (as bishop Patrick expresses it), and he was to look upon himself as preserved by divine mercy.
The houses of Israelites are said to be dedicated (Deuteronomy 20:5), for they were a holy nation, and therefore they ought to keep their houses pure from all ceremonial pollutions, that they might be fit for the service of that God to whom they were devoted.
And the same care should we take to reform whatever is amiss in our families, that we and our houses may serve the Lord; see Genesis 35:2. Some have thought the leprosy in the house was typical of the idolatry of the Jewish church, which did strangely cleave to it; for, though some of the reforming kings took away the infected stones, yet still it broke out again, till by the captivity of Babylon God took down the house, and carried it to an unclean land; and this proved an effectual cure of their inclination to idols and idolatrous worships.