Exodus 21:13

Whither - Where; which place.

I will appoint thee a place whither he shall flee - From the earliest times the nearest akin had a right to revenge the murder of his relation, and as this right was universally acknowledged, no law was ever made on the subject; but as this might be abused, and a person who had killed another accidentally, having had no previous malice against him, might be put to death by the avenger of blood, as the nearest kinsman was termed, therefore God provided the cities of refuge to which the accidental manslayer might flee till the affair was inquired into, and settled by the civil magistrate.

There was no place of safety for the guilty murderer, not even the altar of Yahweh. Thus all superstitious notions connected with the right of sanctuary were excluded. Adonijah and Joab 1 Kings 1:50; 1 Kings 2:28 appear to have vainly trusted that the common feeling would protect them, if they took hold of the horns of the altar on which atonement with blood was made Leviticus 4:7. But for one who killed a man "at unawares," that is, without intending to do it, the law afterward appointed places of refuge, Numbers 35:6-34; Deuteronomy 4:41-43; Deuteronomy 19:2-10; Joshua 20:2-9. It is very probable that there was some provision answering to the cities of refuge, that may have been based upon old usage, in the camp in the Wilderness.