Numbers 35:30-34

YLT(i) 30 whoso smiteth a person, by the mouth of witnesses doth one slay the murderer; and one witness doth not testify against a person—to die. 31 `And ye take no atonement for the life of a murderer who is condemned—to die, for he is certainly put to death; 32 and ye take no atonement for him to flee unto the city of his refuge, to turn back to dwell in the land, until the death of the priest. 33 `And ye profane not the land which ye are in, for blood profaneth the land; as to the land, it is not pardoned for blood which is shed in it except by the blood of him who sheddeth it; 34 and ye defile not the land in which ye are dwelling, in the midst of which I do tabernacle, for I Jehovah do tabernacle in the midst of the sons of Israel.'