1 Chronicles 23:6-13

6Then David divided the Levites into divisions according to the sons of Levi:

Gershon, Kohath, and Merari. 7The Gershonites: Ladan1 and Shimei. 8The sons of Ladan: Jehiel2 the first, Zetham, and Joel—three in all. 9The sons of Shimei: Shelomoth, Haziel, and Haran—three in all. These were the heads of the families of Ladan. 10And the sons of Shimei:3 Jahath, Zina,4 Jeush, and Beriah. These were the sons of Shimei—four in all. 11Jahath was the first and Zizah was the second; but Jeush and Beriah did not have many sons, so they were counted as one family and received a single assignment. 12The sons of Kohath: Amram, Izhar, Hebron, and Uzziel—four in all. 13The sons of Amram: Aaron and Moses. Aaron and his descendants were set apart forever to consecrate the most holy things, to burn incense before the LORD, to minister before Him, and to pronounce blessings in His name forever.