1 Chronicles 25:2, 3

From the sons of Asaph: Zakkur, Joseph, Nethaniah and Asarelah. The sons of Asaph were under the supervision of Asaph, who prophesied under the king’s supervision.

As for Jeduthun, from his sons: Gedaliah, Zeri, Jeshaiah, Shimei, Hashabiah and Mattithiah, six in all, under the supervision of their father Jeduthun, who prophesied, using the harp in thanking and praising the LORD.