Leviticus 14:39

And the priest shall return on the seventh day and view the house; and, behold, [if] the plague is spread in the walls of the house,

And the priest shall come again the seventh day, and shall look: and, behold, if the plague be spread in the walls of the house;

The priest shall come again on the seventh day, and look. If the plague has spread in the walls of the house,