1 Chronicles 23:5-7
5 4000 will be gatekeepers, and 4000 will be musicians. I made special musical instruments for them. They will use them to praise the Lord.”
6 David separated the Levites into three groups. They were the tribes of Levi’s three sons, Gershon, Kohath, and Merari.
The Gershon Family Group
7 From the tribe of Gershon there were Ladan and Shimei.