Leviticus 23:29-32 Amplified Bible (AMP)

29. For whoever is not afflicted [by fasting in penitence and humility] on this day shall be cut off from among his people [that he may not be included in the atonement made for them].

30. And whoever does any work on that same day I will destroy from among his people.

31. You shall do no kind of work [on that day]. It is a statute forever throughout your generations in all your dwellings.

32. It shall be to you a sabbath of rest, and you shall afflict yourselves [by fasting in penitence and humility]. On the ninth day of the month from evening to evening you shall keep your sabbath.

Leviticus 23