1 Chronicles 6:33, 39, 44

And these are they that waited, and their sons. Of the sons of the Kohathites: Heman the singer, the son of Joel, the son of Samuel

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

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