Leviticus 14:35

And he that owneth the house shall come and tell the priest, saying, It seemeth to me there is as it were a plague in the house:

God laid down what the owner of a house was to do when a plague was thought to be present in it, coming to tell the priest that something like a plague seemed to be there. In doing so He gave instruction for the dwellings of the people just as He gave instruction for His own service. The directions given for such a case show His care for order and for cleanliness.