2 Chronicles 8:14

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 [the LORD] 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 is what David, the man of God, had commanded.

2 Chronicles 8:14 Meaning and Commentary

2 Chronicles 8:14

And he appointed, according to the order of David his father,
the courses of the priests to their service
The twenty four courses which served weekly in their turns, ( 1 Chronicles 24:1-31 )

and the Levites to their charges, to praise and minister before the
priests, as duty of every day required;
who also had their courses by lot, to sing the praises of God, when the priests sacrificed, or blew the trumpets, ( 1 Chronicles 25:1-31 ) ,

the porters also by their courses at every gate;
from hence Dr. Lightfoot concludes that these were divided into twenty four classes, as the priests and Levite singers were:

for so had David the man of God commanded,
( 1 Chronicles 26:1-32 ) , who in all these affairs acted as a prophet, under the inspiration and direction of the Holy Spirit of God.

2 Chronicles 8:14 In-Context

12 Then Solomon sacrificed burnt offerings to the LORD on the LORD's altar that he built in front of the entrance hall.

13 He sacrificed every day, on weekly worship days, on the New Moon Festivals, and on the three annual festivals (the Festival of Unleavened Bread, the Festival of Weeks, and the Festival of Booths) as Moses had commanded.

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 [the LORD] 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 is what David, the man of God, had commanded.

15 No one neglected the king's orders to the priests or the Levites in any matter, including the [temple's] finances.

16 All of Solomon's work was carried out from the day the foundation of the LORD's temple was laid until it was completed. The LORD's temple was [now] finished.