Numbers 35:31 (BSB)

You are not to accept a ransom for the life of a murderer who deserves to die; he must surely be put to death.

From Numbers 35. Also in the ESV.

Commentary on Numbers 35:31

• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on 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...
• Geneva Bible Notes (Reformed), Geneva Bible Study Notes on Numbers 35:31: Moreover ye shall take no satisfaction for the life of a murderer, which [is] guilty of death: but he shall be surely put to death. (m) Who purposely committed murder.
• Adam Clarke (Methodist), Clarke's Commentary on the Bible on Numbers 35:31: Ye shall take no satisfaction for the life of a murderer - No atonement could be made for him, nor any commutation, so as to save him from death. All the laws of the civilized world have either adjudged the murderer to death, or to a punishment equivalent to it; such as perpetual imprisonment, in a dungeon, under ground, on a stone floor, without light...
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Numbers 35:29-32: Num 35:29-32 If, therefore, the confinement of the unintentional manslayer in the city of refuge was neither an ordinary exile nor merely a means of rescuing him from the revenge of the enraged goel, but an appointment of the just and merciful God for the expiation of human blood even though not wilfully shed, that, whilst there was no violation of judicial righteousness, a barrier...