And these are the names of the sons of Levi by their kindreds: Gerson, and Caath, and Merari. And the years of the life of Levi were a hundred and thirty-seven.
This also is the number of the sons of Levi by their families: Gerson, of whom is the family of the Gersonites: Caath, of whom is the family of the Caathites: Merari, of whom is the family of the Merarites.
And David spoke to the chiefs of the Levites, to appoint some of their brethren to be singers with musical instruments, to wit, on psalteries, and harps, and cymbals, that the joyful noise might resound on high.
So they brought the ark of God, and set it in the midst of the tent, which David had pitched for it. And they offered holocausts and peace-offerings before God.
Moreover David and the chief officers of the army separated for the ministry the sons of Asaph, and of Heman, and of Idithun: to prophesy with harps, and with psalteries, and with cymbals according to their number serving in their appointed office.