'Office' in the Bible

And Johanan begat Azariah, (he it is that executed the priest's office in the temple that Solomon built in Jerusalem:)

And they ministered before the dwelling place of the tabernacle of the congregation with singing, until Solomon had built the house of the LORD in Jerusalem: and then they waited on their office according to their order.

All these which were chosen to be porters in the gates were two hundred and twelve. These were reckoned by their genealogy in their villages, whom David and Samuel the seer did ordain in their set office.

For these Levites, the four chief porters, were in their set office, and were over the chambers and treasuries of the house of God.

And Mattithiah, one of the Levites, who was the firstborn of Shallum the Korahite, had the set office over the things that were made in the pans.

Because their office was to wait on the sons of Aaron for the service of the house of the LORD, in the courts, and in the chambers, and in the purifying of all holy things, and the work of the service of the house of God;

But Nadab and Abihu died before their father, and had no children: therefore Eleazar and Ithamar executed the priest's office.