to their service # 13_1CH_25_01 # Moreover David and the captains of the host separated to the service of the sons of Asaph, and of Heman, and of Jeduthun, who should prophesy with harps, with psalteries, and with cymbals: and the number of the workmen according to their service was: 
to their service # 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. 
to their service # 04_NUM_07_07 # Two wagons and four oxen he gave unto the sons of Gershon, according to their service: 
unto their service # 04_NUM_07_08 # And four wagons and eight oxen he gave unto the sons of Merari, according unto their service, under the hand of Ithamar the son of Aaron the priest.