And there shall be no man in the tabernacle of the congregation when he goeth in to make an atonement in the holy place, until he come out, and have made an atonement for himself, and for his household, and for all the congregation of Israel. Leviticus 16:17
Then Joseph could not refrain himself before all them that stood by him; and he cried, Cause every man to go out from me. And there stood no man with him, while Joseph made himself known unto his brethren. Genesis 45:1
Yom Kippur is about removing the veil and seeing Yah face to face. Remember Isaiah 28 Yisrael fasted and Yah didn’t see them, revealed Himself to them. In Luke in the last days, He Yeshua will reveal Himself and Yisrael wouldn’t be able to see Him. (Luke 17:3 Yom Kippur is a day Yah reveals Himself to His people, just as Joseph revealed himself to his Achim (brothers).