Exodus 30:10 "Aaron shall make atonement on its horns once a year; he shall make atonement on it with the blood of the sin offering of atonement once a year throughout your generations. It is most holy to the LORD."

Leviticus 16:29 "This shall be a permanent statute for you: in the seventh month, on the tenth day of the month, you shall humble your souls and not do any work, whether the native, or the alien who sojourns among you;

Leviticus 16:30 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.

Leviticus 23:28 "You shall not do any work on this same day, for it is a day of atonement, to make atonement on your behalf before the LORD your God.

Leviticus 25:9 'You shall then sound a ram's horn abroad on the tenth day of the seventh month; on the day of atonement you shall sound a horn all through your land.

Numbers 29:7 'Then on the tenth day of this seventh month you shall have a holy convocation, and you shall humble yourselves; you shall not do any work. (NASB ©1995)