And the sons of Levi: Gershon, Kohath, and Merari.
And these are the names of the sons of Levi according to their generations: Gershon, and Kohath, and Merari; and the years of the life of Levi were a hundred thirty and seven years.
And these are they that were numbered of the Levites after their families: of Gershon, the family of the Gershonites; of Kohath, the family of the Kohathites; of Merari, the family of the Merarites.
And David divided them into courses according to the sons of Levi: Gershon, Kohath, and Merari.