Leviticus 23:27

24 `Speak unto the sons of Israel, saying, In the seventh month, on the first of the month, ye have a sabbath, a memorial of shouting, a holy convocation;

25 ye do no servile work, and ye have brought near a fire-offering to Jehovah.`

26 And Jehovah speaketh unto Moses, saying,

27 `Only -- on the tenth of this seventh month is a day of atonements; ye have a holy convocation, and ye have humbled yourselves, and have brought near a fire-offering to Jehovah;

28 and ye do no work in this self-same day, for it is a day of atonements, to make atonement for you, before Jehovah your God.

29 `For any person who is not humbled in this self-same day hath even been cut off from his people;

30 and any person who doth any work in this self-same day I have even destroyed that person from the midst of his people;