1 Chronicles 6:62

The twenty-three cities that belonged to the sons of Kohath are now followed by the thirteen due to the sons of Gershom, taken from the tribes of Issachar, Asher, Naphtali, and half Manasseh. The fact only is stated here, the details being supplied in verses 71-76. And it is easily to be seen that, as from the most important tribes were levied the cities for Levites first in precedence, so the same principle is observed to the end.