Until he stand before the congregation in judgment - So one of these cities was not a perpetual asylum; It was only a pro tempore refuge, till the case could be fairly examined by the magistrates in the presence of the people, or the elders their representatives; and this was done in the city or place where he had done the murder, Jos 20:4, Jos 20:6. If he was found worthy of death, they delivered him to the avenger that he might be slain, Deu 19:12; if not, they sent him back to the city of refuge, where he remained till the death of the high priest, Num 35:25. Before the cities of refuge were appointed, the altar appears to have been a sanctuary for those who had killed a person unwittingly; see on Exo 21:13 (note), and Exo 21:14 (note).

And if he smite him with an instrument of iron, so that he die,.... As with an hatchet, hammer, sword, knife, &c.

he is a murderer; the instrument used by him, and with which he smote, shows that he had a bad design, and intended to kill, or he would never have smitten a man with such an instrument:

the murderer shall surely be put to death; be condemned to death, and be executed, by the order of the civil magistrate, according to the law in Gen 9:6 and not be allowed the benefit of a city of refuge.

If he smite him with an instrument of iron, so that he die, &c.--Various cases are here enumerated in which the Goel or avenger was at liberty to take the life of the murderer; and every one of them proves a premeditated purpose.