Lev Leviticus, chapter Book of Leviticus, chapter 16
And he shall make kapporah for HaKodesh, because of the tuma of the Bnei Yisroel, and because of their peysha'im in all their chattot; and so shall he do for the Ohel Mo'ed, that remaineth among them in the midst of their tumah. Heb 9:2