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.

¹⁸ Also Jehoiada appointed the offices of the house of the Lord by the hand of the priests the Levites, whom David had distributed in the house of the Lord, to offer the burnt offerings of the Lord, as it is written in the law of Moses, with rejoicing and with singing, as it was ordained by David.

²⁵ And he set the Levites in the house of the Lord with cymbals, with psalteries, and with harps, according to the commandment of David, and of Gad the king's seer, and Nathan the prophet: for so was the commandment of the Lord by his prophets.