NET

18 Jehoiada then assigned the duties of the Lord’s temple to the priests, the Levites whom David had assigned to the Lord’s temple. They were responsible for offering burnt sacrifices to the Lord with joy and music, according to the law of Moses and the edict of David.

Darby

18 And Jehoiada appointed the offices of the house of Jehovah under the hand of the priests, the Levites, whom David had set by classes over the house of Jehovah to offer up Jehovah's burnt-offerings, as it is written in the law of Moses, with rejoicing and with singing according to the directions of David.

KJV

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.