1 Chronicles 15:17

And his brother Asaph, who stood on his right hand, even Asaph the son of Berachiah, the son of Shimea,

And these are they that waited with their children. Of the sons of the Kohathites: Heman a singer, the son of Joel, the son of Shemuel, waited: Heb. stood

And their brethren the sons of Merari stood on the left hand: Ethan the son of Kishi, the son of Abdi, the son of Malluch, Kishi: or, Kushaiah

Now the name of his firstborn was Joel; and the name of his second, Abiah: they were judges in Beersheba.

Moreover David and the captains of the host separated to the service of the sons of Asaph, and of Heman, and of Jeduthun, who should prophesy with harps, with psalteries, and with cymbals: and the number of the workmen according to their service was: Of the sons of Asaph; Zaccur, and Joseph, and Nethaniah, and Asarelah, the sons of Asaph under the hands of Asaph, which prophesied according to the order of the king. Asarelah: otherwise called Jesharelah according...: Heb. by the hands of the king Of Jeduthun: the sons of Jeduthun; Gedaliah, and Zeri, and Jeshaiah, Hashabiah, and Mattithiah, six, under the hands of their father Jeduthun, who prophesied with a harp, to give thanks and to praise the LORD. Zeri: or, Izri Of Heman: the sons of Heman; Bukkiah, Mattaniah, Uzziel, Shebuel, and Jerimoth, Hananiah, Hanani, Eliathah, Giddalti, and Romamtiezer, Joshbekashah, Mallothi, Hothir, and Mahazioth: Uzziel: also called, Azareel Shebuel: also called, Shubael All these were the sons of Heman the king's seer in the words of God, to lift up the horn. And God gave to Heman fourteen sons and three daughters. words: or, matters

So the singers, Heman, Asaph, and Ethan, were appointed to sound with cymbals of brass;

[A Song or Psalm of Asaph.] Keep not thou silence, O God: hold not thy peace, and be not still, O God. of Asaph: or, for Asaph

[A Psalm of Asaph.] Truly God is good to Israel, even to such as are of a clean heart. of: or, for Truly: or, Yet of...: Heb. clean of heart