Numbers 35:30-33 ▼

30 Whoever strikes a person, by the mouth of witnesses [one] slays the murderer; and one witness does not testify against a person to cause [him] to die.

31 And you take no atonement for the life of a murderer who [is] condemned to die, for he is certainly put to death;

32 and you take no atonement for him [who had] to flee to the city of his refuge, to return to dwell in the land, until the death of the priest.

33 And you do not profane the land which you [are] in, for blood profanes the land; as for the land, it is not pardoned for blood which is shed in it except by the blood of him who sheds it;