Leviticus 14:36

33 And the Lord said to Moses and Aaron,

34 When you have come into the land of Canaan which I will give you for your heritage, if I put the leper's disease on a house in the land of your heritage,

35 Then let the owner of the house come and say to the priest, It seems to me that there is a sort of leper's disease in the house.

36 And the priest will give orders for everything to be taken out of the house, before he goes in to see the disease, so that the things in the house may not become unclean; and then the priest is to go in to see the house;

37 And if he sees that the walls of the house are marked with hollows of green and red, and if it seems to go deeper than the face of the wall;

38 Then the priest will go out of the door of the house, and keep the house shut up for seven days:

39 And the priest is to come again on the seventh day and have a look and see if the marks on the walls of the house are increased in size;