Joshua 20:6

6He shall live in that city until he has stood before the congregation for judgment [and 20:6 If judged guilty, the killer would be put to death. Otherwise, the time he was required to spend in the city of refuge represented a less severe punishment for involuntary manslaughter. Afterward, he was entitled to return home and live in safety. If the blood avenger killed him then, the avenger would be guilty of murder.if acquitted of murder he must stay there], until the death of the one who is the high priest in those days. Then the offender (manslayer) shall return to his own city and his own house from which he fled.’ ”