day of attonement

   Exodus 30.10:And Aaron shall make an atonement upon the horns of it once in a year with the blood of the sin offering of atonements: once in the year shall he make atonement upon it throughout your generations: it is most holy unto the LORD.

  Leviticus 25.9:Then shalt thou cause the trumpet of the jubile to sound on the tenth day of the seventh month, in the day of atonement shall ye make the trumpet sound throughout all your land.  

¹⁹ For when Moses had spoken every precept to all the people according to the law, he took the blood of calves and of goats, with water, and scarlet wool, and hyssop, and sprinkled both the book, and all the people,

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:

Hebrews 9 King James Version (KJV)

9 Then verily the first covenant had also ordinances of divine service, and a worldly sanctuary.

⁵ And over it the cherubims of glory shadowing the mercyseat; of which we cannot now speak particularly.

² For there was a tabernacle made; the first, wherein was the candlestick, and the table, and the shewbread; which is called the sanctuary.
³ And after the second veil, the tabernacle which is called the Holiest of all;
⁴ Which had the golden censer, and the ark of the covenant overlaid round about with gold, wherein was the golden pot that had manna, and Aaron's rod that budded, and the tables of the covenant;