Joshua 20:6; Joshua 21:10

Joshua 20:6

6 'He shall dwell in that city until he stands before the congregation for judgment, until the death of the one who is high priest in those days. Then the manslayer shall return to his own city and to his own house, to the city from which he fled.' "

Joshua 21:10

10 and they were for the sons of Aaron, one of the families of the Kohathites, of the sons of Levi, for the lot was theirs first.