Numbers 3:14-20

14The Lord said to Moses in the Sinai desert,

15‘Put the Levites into clans and families and count them. Make a list of every male who is a month old or older.’

16Moses obeyed the Lord. So Moses recorded them as the Lord said.

17The names of the sons of Levi were Gershon, Kohath and Merari.

18Gershon had two sons. Their names were Libni and Shimei.

19Kohath's sons were called Amram, Izhar, Hebron and Uzziel.

20Merari's sons were called Mahli and Mushi. Those were the sons and grandsons of Levi. They became the leaders of the clans of Levi's tribe.