Leviticus 14:35

³³And the Lord spoke to Moses and Aaron, saying,

³⁴Whensoever ye shall enter into the land of the Canaanites, which I give you for a possession, and I shall put the plague of leprosy in the houses of the land of your possession;

— Leviticus 14:35 —

³⁶And the priest shall give orders to remove the furniture of the house, before the priest comes in to see the plague, and thus none of the things in the house shall become unclean; and afterward the priest shall go in to examine the house.

³⁷And he shall look on the plague, and, behold, if the plague is in the walls of the house, he will see greenish or reddish cavities, and the appearance of them will be beneath the surface of the walls.