the courses of # 13_1CH_28_13 # Also for the courses of the priests and the Levites, and for all the work of the service of the house of the LORD, and for all the vessels of service in the house of the LORD. 
the courses of # 13_1CH_28_21 # And, behold, the courses of the priests and the Levites, [even they shall be with thee] for all the service of the house of God: and [there shall be] with thee for all manner of workmanship every willing skilful man, for any manner of service: also the princes and all the people [will be] wholly at thy commandment. 
the courses of # 14_2CH_08_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. 
the courses of # 14_2CH_31_02 # And Hezekiah appointed the courses of the priests and the Levites after their courses, every man according to his service, the priests and Levites for burnt offerings and for peace offerings, to minister, and to give thanks, and to praise in the gates of the tents of the LORD.