Numbers 3:19

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

These were the sons of Levi by their names: Gershon, Kohath, and Merari.

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

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

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

Of Gershon was the family of the Libnites, and the family of the Shimeites. These are the families of the Gershonites.

Those who were counted of them, according to the number of all the males from a month old and upward, even those who were counted of them were seven thousand five hundred.