Exodus 6:21

19The sons of Merari: Mahli and Mushi. These are the families of the Levites according to their generations.

20Amram took Jochebed his father’s sister to himself as wife; and she bore him Aaron and Moses. The years of the life of Amram were one hundred thirty-seven years.

21The sons of Izhar: Korah, and Nepheg, and Zichri.

22The sons of Uzziel: Mishael, Elzaphan, and Sithri.

23Aaron took Elisheba, the daughter of Amminadab, the sister of Nahshon, as his wife; and she bore him Nadab and Abihu, Eleazar and Ithamar.