David and the commanders of the army chose some of the sons of Asaph, Heman, and Jeduthun to preach and play harps, lyres, and cymbals. Here is a list of the men who served in this way:
Jeduthun’s sons who served were Gedaliah, Zeri, Jeshaiah, Shimei, Hashabiah, and Mattithiah. There were six of them, and Jeduthun directed them. He preached and used a harp to give thanks and praise to the Lord.
Heman directed all his sons in making music for the Temple of the Lord with cymbals, lyres, and harps; that was their way of serving in the Temple of God. King David was in charge of Asaph, Jeduthun, and Heman.
These Levites gathered their brothers together and made themselves holy for service in the Temple. Then they went into the Temple of the Lord to purify it. They obeyed the king’s command that had come from the Lord.