These are the [three] sons of Levi by their names: Gershon, Kohath, and Merari.
The sons of Levi: Gershon, Kohath, and Merari.
And David organized them into divisions according to the sons of Levi: Gershon, Kohath, and Merari.
So Moses numbered them just as he was commanded by the word (mouth) of the Lord.