Numbers 35:33
So ye shall not pollute the land wherein ye : for blood it defileth the land: and the land cannot be cleansed of the blood that is shed therein, but by the blood of him that shed it.
ā The Restored Word Bible
Context
31 Moreover ye shall take no satisfaction for the life of a murderer, which guilty of death: but he shall be surely put to death.
32 And ye shall take no satisfaction for him that is fled to the city of his refuge, that he should come again to dwell in the land, until the death of the priest.
33 So ye shall not pollute the land wherein ye : for blood it defileth the land: and the land cannot be cleansed of the blood that is shed therein, but by the blood of him that shed it.
34 Defile not therefore the land which ye shall inhabit, wherein I dwell: for I the Yahuah dwell among the children of Israel.