'Minister' in the Bible
And the cell whose front is toward the north is for the priests, the keepers of the charge of the altar. These are the sons of Zadok, those who, from among the sons of Levi, approach unto Jehovah to minister unto him.
When the priests enter in, they shall not go forth from the sanctuary into the outer court, but there they shall lay their garments wherein they minister, for they are holy; and they shall put on other garments, and shall approach to that which is for the people.
And thou shalt give to the priests the Levites that are of the seed of Zadok, who come near unto me, to minister unto me, saith the Lord Jehovah, a young bullock for a sin-offering.
but they shall be ministers in my sanctuary, having oversight at the gates of the house, and doing the service of the house: they shall slaughter the burnt-offering and the sacrifice for the people, and they shall stand before them to minister unto them.
But the priests, the Levites, the sons of Zadok, that kept the charge of my sanctuary when the children of Israel went astray from me, they shall approach unto me to minister unto me, and they shall stand before me to present unto me the fat and the blood, saith the Lord Jehovah.
They shall enter into my sanctuary, and they shall approach unto my table, to minister unto me, and they shall keep my charge.
And it shall come to pass when they enter in at the gates of the inner court, they shall be clothed with linen garments; and no wool shall come upon them, when they minister in the gates of the inner court, and towards the house.
And on the day that he goeth into the sanctuary, unto the inner court, to minister in the sanctuary, he shall present his sin-offering, saith the Lord Jehovah.