17 So the Levites appointed Heman son of Joel; from his relatives, Asaph son of Berekiah; and from their relatives the Merarites, Ethan son of Kushaiah;

Matthew Henry's Commentary on 1 Chronicles 15:17

Commentary on 1 Chronicles 15:1-24

(Read 1 Chronicles 15:1-24)

Wise and good men may be guilty of oversights, which they will correct, as soon as they are aware of them. David does not try to justify what had been done amiss, nor to lay the blame on others; but he owns himself guilty, with others, of not seeking God in due order