'Minister' in the Bible

In the priests' going in, they come not out from the sanctuary unto the outer court, and there they place their garments with which they minister, for they are holy, and have put on other garments, and have drawn near unto that which is for the people.'

And in the day of his coming in unto the sanctuary, unto the inner court, to minister in the sanctuary, he bringeth near his sin-offering -- an affirmation of the Lord Jehovah.