Leviticus 16
23 Ref Then let Aaron come into the Tent of meeting and take off the linen clothing which he put on when he went into the holy place, and put them down there;
24 Ref And after bathing his body in water in a holy place, he is to put on his clothing and come out and give his burned offering and the burned offering of the people, to take away his sin and the sin of the people.