Any priest serving in the tabernacle had to be annointed for that by the High Priest
21 And thou shalt take of the blood that is upon the altar, and of the anointing oil, and sprinkle it upon Aaron, and upon his garments, and upon his sons, and upon the garments of his sons with him: and he shall be hallowed, and his garments, and his sons, and his sons’ garments with him.
The High priest wore the sacred breastplate with twelve gems inscribed with the name of the tribes of Isreal
4 And these are the garments which they shall make; a breastplate, and an ephod, and a robe, and a broidered coat, a mitre, and a girdle: and they shall make holy garments for Aaron thy brother, and his sons, that he may minister unto me in the priest’s office.
THE OUTTER COURTS
The tabernacle was an elaborate system of tents and portable items, designed to be carried through the desert and set up when the people and encamped.
whereever they decided to pitch these sacred tents that become the Holy Place.
9 And thou shalt make the court of the tabernacle: for the south side southward there shall be hangings for the court of fine twined linen of an hundred cubits long for one side: 10 and the twenty pillars thereof and their twenty sockets shall be of brass; the hooks of the pillars and their fillets shall be of silver. 11 And likewise for the north side in length there shall be hangings of an hundred cubits long, and his twenty pillars and their twenty sockets of brass; the hooks of the pillars and their fillets of silver.