Leviticus 14:39

“And the priest shall come again the seventh day, and shall look, etc.] On the seventh day from his shutting of it up, he shall open it again, go into it, and observe in what condition it is: and, behold, [if] the plague be spread in the walls of the house: the hollow strakes are become deeper, or the coloured spots are become larger: spreading was always a sign of leprosy, both in the bodies of men, and in garments.”

“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 ... -…”

“Lev 13:7, Lev 13:8, Lev 13:22, Lev 13:27, Lev 13:36, Lev 13:51; The consideration of the circumstances will exhibit the importance and the propriety of the Mosaic ordinance on the subject of the house leprosy. 1\. Moses ordained that the owner of a house, when any suspicious spots appeared on the walls, should be bound to give notice of it, in order that the house might be inspected; and that person, as in the case of the human leprosy, was to be the priest, whose duty it was. Now this would serve to check the mischief at its very origin, and make every one attentive to observe it. 2\. On notice being given, the priest was to inspect the house, but the occupant had liberty to remove…”