'Offices' in the Bible

And it shall come to pass that every one that is left of thy house shall come to crouch to him for a small piece of silver and for a cake of bread, and shall say, Put me, I pray thee, into one of the priestly offices, that I may eat a morsel of bread.

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.