'Ministering' in the Bible

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

Whenever they enter at the gates of the inner court, they are to be clothed with linen garments. They are not to wear wool when they are ministering within the gates of the inner courtyard or in the Temple.

Before they go out to the outer court, to the people, they must take off the clothes they have been ministering in, leave them in the holy chambers, and dress in other clothes so that they do not transmit holiness to the people through their clothes.