The fact that certain abnormal conditions afflicted houses as well as persons reminded the Israelites that their dwelling places as well as their bodies needed to be holy. This law anticipated life in Canaan when the Israelites would live in houses rather than tents. God would "put"the abnormal condition on a house as He did on a person. It did not just pass from person to dwelling by contagion (v. 34). God prescribed the same rite of purification for a house as for a person (vv. 49-53). He did not require sacrifices because buildings simply have to be clean.
". . . although it is primarily in the human body that sin manifests itself, it spreads from man to the things which he touches, uses, inhabits, though without our being able to represent this spread as a physical contagion."156
