'Ministers' in the Bible

Yet they shall be ministers in my sanctuary, having oversight at the gates of the house, and ministering in the house: they shall slay the burnt-offering and the sacrifice for the people, and they shall stand before them to minister unto them.

It is a holy portion of the land; it shall be for the priests, the ministers of the sanctuary, that come near to minister unto Jehovah; and it shall be a place for their houses, and a holy place for the sanctuary.

And five and twenty thousand in length, and ten thousand in breadth, shall be unto the Levites, the ministers of the house, for a possession unto themselves, for twenty chambers.

Then said he unto me, These are the boiling-houses, where the ministers of the house shall boil the sacrifice of the people.