Numbers 35:19

“The revenger of blood himself shall slay the murderer, etc.] Not only shall have power to do it, but, as it seems, should be obliged to do it; be the executioner of the murderer; but not before his case has been heard, examined, tried, and judged; wherefore the Targum of Jonathan adds, “in judgment,” that is, as Onkelos explains it, “when he is condemned by judgment,” the court of judicature: when he meeteth him he shall slay him; the first opportunity he has, even though, as Jarchi says, if he meets him in the midst of one of the cities of refuge, and no judgment is passed on him.”

“The sense is: Inasmuch as to take another man’s life by any means whatsoever is murder, and exposes the murderer to the penalty of retaliation; so, if the deed is done in hostility, it is in truth actual murder, and the murderer shall be slain; but if it be not done in hostility, then the congregation shall interpose to stop the avenger’s hand. Numbers 35:19 When he meeteth him - Provided, of course, it were without a city of refuge. Numbers 35:24 The case of the innocent slayer is here contemplated. In a doubtful case there would necessarily have to be a judicial decision as to the guilt or innocence of the person who claimed the right of asylum. Numbers 35:25 The homicide was safe only…”

“He shall slay him - Either by himself, as the following words shew; so it is a permission, that he may do it without offence to God or danger to himself: or by the magistrate, from whom he shall demand justice: so it is a command. Numbers 35:24”

“35:19 The avenger was the victim’s closest relative; he was responsible for putting the murderer to death, carrying out the vengeance that justice required (Gen 9:6).”

“Num 35:12, Num 35:21, Num 35:24, Num 35:27; Deu 19:6, Deu 19:12; Jos 20:3, Jos 20:5 Numbers 35:20”

“The avenger of blood could put him to death, when he hit upon him, i.e., whenever and wherever he met with him. Numbers 35:20”