It is interesting to note this provision, made in the Land of Promise, for the passing over of sins which were not sins of presumption. In this verse there is that great word "Whosoever." These cities of refuge were not for Hebrews only, but for whosoever had killed any person, without malice or forethought, but quite unintentionally, and had fled thither. Some poor Gentile might be sojourning among the chosen people, and suddenly find himself liable to the pursuit of the avenger of blood; but the gates of the refuge city were open to him, and the elders of the city were bound to give him a place that he might dwell among them (Jos 20:4), not only safely, but in rest and peace.
Herein there was a foreshadowing of the days when God should open the door of faith unto the Gentiles. "For there is no distinction between Jew and Greek, since the same Lord is Lord of all, and is rich unto all them that call upon Him."
There were two mysteries made known to the Apostle Paul: one he unfolds in the Epistle to the Ephesians, the other in the Epistle to the Colossians. First, he teaches us that the Gentiles may be fellow heirs and fellow members of the body, and fellow partakers of the promise of Christ through the Gospel. Next, he expatiates on the riches of the glory of this mystery, among the Gentiles, that the living Saviour is prepared to dwell in their hearts also, as the Hope of Glory. It is a serious question, how far we are participating in our inheritance. The gates of the promises made to Abraham and his seed are open for us to enter in and dwell there; but there is too much backwardness and hesitancy in us all. "Whosoever will, let him take."