Read Leviticus 16:17 Using Other Translations
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.
No one may be in the tent of meeting from the time he enters to make atonement in the Holy Place until he comes out and has made atonement for himself and for his house and for all the assembly of Israel.
No one else is allowed inside the Tabernacle when Aaron enters it for the purification ceremony in the Most Holy Place. No one may enter until he comes out again after purifying himself, his family, and all the congregation of Israel, making them right with the LORD .