1 Chronicles 16:37
Later David left the presence of the Ark of the Covenant of the LORD so Asaph and his fellow descendants of Levi could serve the ark there continually each day, doing whatever was required.
2 Chronicles 8:14
Following proscriptions laid down by his father David, Solomon appointed divisions of priests for their service as well as descendants of Levi for duties of praise and ministry before the priests consistent with the daily rules. Furthermore, because David, the man of God, had commanded it, Solomon also appointed gatekeepers to serve by divisions at every gate of the Temple.
Ezra 3:4
They also observed the Festival of Tents as has been prescribed, offering a specific number of daily burnt offerings in accordance with the ordinance of each day.
1 Chronicles 15:17-24
So the descendants of Levi appointed Joel's son Heman, his relative Berechiah's son Asaph, as well as certain relatives of Merari's sons, including Kushaiah's son Ethan,
1 Chronicles 16:4-6
In the presence of the ark of the LORD, he appointed some of the descendants of Levi to minister continually by remembering, giving thanks, and praising the LORD God of Israel.
1 Chronicles 25:1-6
Along with officers in his army, David consecrated to assist in service to the descendants of Asaph, Heman, and Jeduthun those who prophesy with lyres, harps, and cymbals.