Leviticus 23:29

23:29 Indeed, any person who does not behave with humility on this particular day will be cut off from his people.

Leviticus 23:28

23:28 You must not do any work on this particular day, because it is a day of atonement to make atonement for yourselves before the Lord your God.

Leviticus 23:30

23:30 As for any person who does any work on this particular day, I will exterminate that person from the midst of his people!