Joshua 20:9 in the King James Version
These were the cities appointed for all the children of Israel, and for the stranger that sojourneth among them, that whosoever killeth any person at unawares might flee thither, and not die by the hand of the avenger of blood, until he stood before the congregation.
Context
8 Beyond the Jordan at Jericho eastward, they assigned Bezer in the wilderness in the plain out of the tribe of Reuben, Ramoth in Gilead out of the tribe of Gad, and Golan in Bashan out of the tribe of Manasseh.
9 These were the appointed cities for all the children of Israel, and for the alien who lives among them, that whoever kills any person unintentionally might flee there, and not die by the hand of the avenger of blood, until he stands trial before the congregation.