Leviticus 16:17,24
And there shall be no man in the tabernacle of the congregation when he goes 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.
Torrey's Topical Textbook—AKJV

Leviticus 23:28
And you shall do no work in that same day: for it is a day of atonement, to make an atonement for you before the LORD your God.
Torrey's Topical Textbook—AKJV

Hebrews 9:7
But into the second went the high priest alone once every year, not without blood, which he offered for himself, and for the errors of the people:
Torrey's Topical Textbook—AKJV