Exodus 29:29-33

29And the holy garments of Aaron shall be his sons’ after him, to be anointed therein, and to be consecrated in them. 30And that son that is priest in his stead shall put them on seven days, when he cometh into the tabernacle of the congregation to minister in the holy place.1

31And thou shalt take the ram of the consecration, and seethe his flesh in the holy place. 32And Aaron and his sons shall eat the flesh of the ram, and the bread that is in the basket, by the door of the tabernacle of the congregation. 33And they shall eat those things wherewith the atonement was made, to consecrate and to sanctify them: but a stranger shall not eat thereof, because they are holy.