'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 kill the burnt offering and the sacrifice for the people, and they shall stand before them to minister to them.

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

Twenty-five thousand in length, and ten thousand in breadth, shall be to the Levites, the ministers of the house, for a possession to themselves, [for] twenty rooms.

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