1 Chronicles 16:37
David left Asaph and his relatives to serve continually in front of the Ark of Jehovah's Covenant, as the daily work required.
2 Chronicles 8:14
As Solomon's father David had directed, he set up the divisions of priests for their service and the divisions of Levites for their appointed places. The Levites were to lead in praising Jehovah and to serve beside the priests by doing whatever needed to be done each day. Solomon also set up divisions of doorkeepers at every gate because this was what David, the man of God, had commanded.
Ezra 3:4
They celebrated the Festival of Booths according to what is written. Each day they offered the sacrifices required for that day.
1 Chronicles 15:17-24
So the Levites appointed Heman son of Joel, and from his relatives they appointed Asaph Berechiah's son. From their own relatives, Merari's descendants, they appointed Ethan son of Kushaiah.
1 Chronicles 16:4-6
David appointed some Levites to serve in front of Jehovah's Ark by offering prayers, thanks, and praise to Jehovah the God of Israel.
1 Chronicles 25:1-6
David and the commanders of the army set apart for the service some of the sons of Asaph and of Heman and of Jeduthun, who were to prophesy with lyres, harps and cymbals; and the number of those who performed their service was: