Leviticus 16:32-33

³²And the Priest whom he shall anoynt, and whom he shall cosecrate (to minister in his fathers steade) shall make the atonement, and shall put on the linnen clothes and Holy vestments,

³³And shall purge the Holy Sanctuarie and the Tabernacle of the Congregation, and shall clense the altar, and make an atonement for the Priests and for all the people of the Congregation.