Numbers 3:17

The LORD spoke to Moses in the wilderness of Sinai, saying,

“Count the children of Levi by their fathers’ houses, by their families. You shall count every male from a month old and upward.”

Moses counted them according to the LORD’s word, as he was commanded.

These are the names of the sons of Gershon by their families: Libni and Shimei.

The sons of Kohath by their families: Amram, Izhar, Hebron, and Uzziel.

The sons of Merari by their families: Mahli and Mushi.

These are the families of the Levites according to their fathers’ houses.