2 Chronicles 8:14
And he appointed, according to the order of David his father, the courses of the priests to their service, and the Levites to their charges, to praise and minister before the priests, as the duty of every day required: the porters also by their courses at every gate: for so had David the man of God commanded.
2 Chronicles 24:6
And the king called for Jehoiada the chief, and said unto him, Why hast thou not required of the Levites to bring in out of Judah and out of Jerusalem the collection, according to the commandment of Moses the servant of the LORD, and of the congregation of Israel, for the tabernacle of witness?