When ye be come into the land - and I put the plague of leprosy - It was probably from this text that the leprosy has been generally considered to be a disease inflicted immediately by God himself; but it is well known that in Scripture God is frequently represented as doing what, in the course of his providence, he only permits or suffers to be done. It is supposed that the infection of the house, as well as of the person and the garments, proceeded from animalcula. See Clarke's note on Leviticus 13:47, and Leviticus 13:52; (note).
This section is separated from that on leprosy in clothing Leviticus 13:47-59 with which it would seem to be naturally connected, and is placed last of all the laws concerning leprosy, probably on account of its being wholly prospective. While the Israelites were in the wilderness, the materials of their dwellings were of nearly the same nature as those of their clothing, and would be liable to the same sort of decay. They were therefore included under the same law.
I put the plague - Yahweh here speaks as the Lord of all created things, determining their decay and destruction as well as their production. Compare Isaiah 45:6-7; Jonah 4:7; Matthew 21:20.
Leviticus 14:37
Hollow strakes - Rather, depressed spots of dark green or dark red, appearing beneath (the surface of) the wall.
Leviticus 14:49
Cleanse the house - Strictly, “purge the house from sin.” The same word is used in Leviticus 14:52; and in Leviticus 14:53 it is said, “and make an atonement for it.” Such language is used figuratively when it is applied to things, not to persons. The leprosy in houses, the leprosy in clothing, and the terrible disease in the human body, were representative forms of decay which taught the lesson that all created things, in their own nature, are passing away, and are only maintained for their destined uses during an appointed period, by the power of Yahweh.