Treasury of Scripture Knowledge
From a month old
Those numbered from the Gershonites, by their families and by their clans,
"Number the Levites by their clans and their families; every male from a month old and upward you are to number."
Gershon's descendants were allotted thirteen cities from the clans of the tribe of Issachar, and from the tribes of Asher and Naphtali and the half-tribe of Manasseh in Bashan.