1 Chronicles 6:33, 39, 44

These are those who served with their sons: From the sons of the Kohathites were Heman the singer, the son of Joel, the son of Samuel

Heman’s brother Asaph stood at his right hand, even Asaph the son of Berechiah, the son of Shimea

On the left hand were their kinsmen the sons of Merari: Ethan the son of Kishi, the son of Abdi, the son of Malluch