of the sons of Asaph: Zaccur, and Joseph, and Nethaniah, and Asharelah, the sons of Asaph, under the hand of Asaph, who prophesied after the order of the king.
which prophesied according to the order of the king; which Asaph composed psalms under the inspiration of the Spirit of God, and was ordered by King David to sing them, and by whose command they were inserted in the book of Psalms, where they now stand with his name to them.