Leviticus 16:29-33

“This shall be a permanent statute for you: in the seventh month, on the tenth day of the month, you shall humble yourselves and not do any work, whether the native, or the stranger who resides among you;

for it is on this day that atonement shall be made for you to cleanse you; you will be clean from all your sins before the Lord.

It is to be a Sabbath of solemn rest for you, so that you may humble yourselves; it is a permanent statute.

So the priest who is anointed and ordained to serve as priest in his father’s place shall make atonement: he shall put on the linen garments, the holy garments,

and make atonement for the holy sanctuary, and he shall make atonement for the tent of meeting and for the altar. He shall also make atonement for the priests and for all the people of the assembly.