Leviticus 16:29-34

29“This is to be a perpetual statute for you. In the seventh month, on the tenth day of the month, you must humble yourselves and do no work of any kind, both the native citizen and the foreigner who resides in your midst,

30for on this day atonement is to be made for you to cleanse you from all your sins; you must be clean before the Lord.

31It is to be a Sabbath of complete rest for you, and you must humble yourselves. It is a perpetual statute.

32“The priest who is anointed and ordained to act as high priest in place of his father is to make atonement. He is to put on the linen garments, the holy garments,

33and he is to purify the Most Holy Place, he is to purify the Meeting Tent and the altar, and he is to make atonement for the priests and for all the people of the assembly.

34This is to be a perpetual statute for you to make atonement for the Israelites for all their sins once a year.” So he did just as the Lord had commanded Moses.