1 Chronicles 6:33, 39, 44

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

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

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