16 These were the names of the sons of Levi according to their records: Gershon, Kohath and Merari. Levi lived 137 years.
17 The sons of Gershon, by clans, were Libni and Shimei.

References for Exodus 6:17

18 The sons of Kohath were Amram, Izhar, Hebron and Uzziel. Kohath lived 133 years.
19 The sons of Merari were Mahli and Mushi. These were the clans of Levi according to their records.
20 Amram married his father’s sister Jochebed, who bore him Aaron and Moses. Amram lived 137 years.

References for Exodus 6:20