Numbers 35:27-34

27 and is found by the avenger of blood outside the bounds of the city of refuge, and is killed by the avenger, no bloodguilt shall be incurred.
28 For the slayer must remain in the city of refuge until the death of the high priest; but after the death of the high priest the slayer may return home.
29 These things shall be a statute and ordinance for you throughout your generations wherever you live.
30 If anyone kills another, the murderer shall be put to death on the evidence of witnesses; but no one shall be put to death on the testimony of a single witness.
31 Moreover you shall accept no ransom for the life of a murderer who is subject to the death penalty; a murderer must be put to death.
32 Nor shall you accept ransom for one who has fled to a city of refuge, enabling the fugitive to return to live in the land before the death of the high priest.
33 You shall not pollute the land in which you live; for blood pollutes the land, and no expiation can be made for the land, for the blood that is shed in it, except by the blood of the one who shed it.
34 You shall not defile the land in which you live, in which I also dwell; for I the Lord dwell among the Israelites.

Numbers 35:27-34 Meaning and Commentary

INTRODUCTION TO NUMBERS 35

Though the tribe of Levi had no part in the division of the land, yet cities out of the several tribes are here ordered to be given them to dwell in, to the number of forty eight, Nu 35:1-8, six of which were to be cities of refuge, Nu 35:9-15, but not for wilful murderers, in whatsoever way they might kill a man, Nu 35:16-21, but for such who had killed a man unawares, Nu 35:22-24, and several rules are given relating to such persons, Nu 35:25-29, but no satisfaction was to be taken in case of murder, nor to excuse a person's return to his own house before the death of the high priest, who had fled to a city of refuge, that so the land might not be defiled, Nu 35:30-34.

New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.