Numbers 35:33-34

Amplified Bible, Classic Edition

³³ So you shall not pollute the land in which you live; for blood pollutes the land, and no atonement can be made for the land for the blood shed in it, but by the blood of him who shed it.

³⁴ And you shall not defile the land in which you live, in the midst of which I dwell, for I, the Lord, dwell in the midst of the people of Israel.