Numbers 35:31

31 You are not to accept a ransom for the life of a murderer who is guilty of killing someone; he must be put to death.

Numbers 35:31 Meaning and Commentary

Numbers 35:31

Moreover, ye shall take no satisfaction for the life of a
murderer
Though he would give all his wealth and substance, all his estates and possessions, and whatever he is worth in the world; for all that a man has he will give for his life; but these are not to be taken, nor anything, and everything his friends may offer for him; all is to be rejected, the life of such a man is not to be saved on any consideration:

which is guilty of death;
as he is who kills a man willingly and purposely; but one may be guilty of killing another, and yet not be deserving of death, when it is done ignorantly and accidentally with respect to him, for which reason this clause is added: but he shall be surely put to death; by the order of the civil magistrate; and if this is not done either through want of evidence, or the fault of the judge, or the criminal clemency of the chief governor, God sooner or later will take vengeance on such a person.

Numbers 35:31 In-Context

29 These [instructions] will be a statutory ordinance for you throughout your generations wherever you live.
30 "If anyone kills a person, the murderer is to be put to death based on the word of witnesses. But no one is to be put to death based on the testimony of one witness.
31 You are not to accept a ransom for the life of a murderer who is guilty of killing someone; he must be put to death.
32 Neither should you accept a ransom for the person who flees to his city of refuge, allowing him to return and live in the land before the death of the [high] priest.
33 "Do not defile the land where you are, for bloodshed defiles the land, and there can be no atonement for the land because of the blood that is shed on it, except by the blood of the person who shed it.
Holman Christian Standard Bible ® Copyright © 2003, 2002, 2000, 1999 by Holman Bible Publishers.  Used by permission.  All rights reserved.