'Minister in the Holy Place' in the Bible

so shall they be upon Aaron and upon his sons, when they go into the tent of meeting, or when they approach unto the altar, to minister in the holy place, lest they bear iniquity, and die, - a statute age-abiding, to him and to his seed after him.

Seven days, shall they be put on by him from among his sons who is priest in his stead, - by him who goeth into the tent of meeting, to minister in the holy place.