SEV Biblia, Chapter 14:37
Y mirará la plaga; y si se vieren manchas en las paredes de la casa, verdosas, profundas o bermejas, las cuales parecieren más hundidas que la pared,
John Gill's Bible Commentary
Ver. 37. And he shall look on the plague , etc.] That which is taken or suspected to be one, being pointed unto by the owner of the house: and, behold, [if] the plague [be] in the walls of the house ; for there it chiefly was, if not solely; and from hence Gersom infers that it must be a walled house, and that it must have four walls, neither more nor fewer; and with this agrees the Misnah f512 , according to which it must be four square; the signs of which were, when it appeared, with hollow strakes, greenish or reddish, which in sight [are] lower than the wall : these signs agree with the other signs before given of leprosy in men and garments; the first, the hollow strakes, which are explained by being lower in appearance than the wall, a sort of corrosion or eating into it, which made cavities in it, answer to the plague being deeper than the skin of the flesh in men; and the colours greenish or reddish, or exceeding green or red, as Gersom, are the same with those of the leprosy in clothes; and some such like appearances are in saltpetre walls, or in walls eaten by saline and nitrous particles; and also by sulphureous, oily, and arsenical ones, as Scheuchzer observes f513 , and are not only tending to ruin, but unhealthful, as if they had rather been eaten by a canker or spreading ulcer; who also speaks of a fossil, called in the German language “steingalla”, that is, the gall of stones, by which they are easily eaten into, because of the vitriolic salt of the fire stone, which for the most part goes along with that mineral, which is dissolved by the moist air. Though this leprosy, in the walls of a house, seems not to have risen from any natural causes, but was from the immediate hand of God; and there have been strange diseases, which have produced uncommon effects on houses, and other things: in the times of Narses is said to be a great plague, especially in the province of Liguria, and on a sudden appeared certain marks and prints on houses, doors, vessels, and clothes, which, if they attempted to wash off, appeared more and more f514 .
Matthew Henry Commentary
Verses 33-53 - The leprosy in a house is unaccountable to us, as well as the lepros in a garment; but now sin, where that reigns in a house, is a plagu there, as it is in a heart. Masters of families should be aware, an 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 whol must be pulled down. The owner had better be without a dwelling, tha live in one that was infected. The leprosy of sin ruins families an churches. Thus sin is so interwoven with the human body, that it mus be taken down by death.
Original Hebrew
וראה 7200 את 853 הנגע 5061 והנה 2009 הנגע 5061 בקירת 7023 הבית 1004 שׁקערורת 8258 ירקרקת 3422 או 176 אדמדמת 125 ומראיהן 4758 שׁפל 8217 מן 4480 הקיר׃ 7023