Leviticus 23:27-29

Amplified Bible, Classic Edition

²⁷ Also the tenth day of this seventh month is the Day of Atonement; it shall be a holy [called] assembly, and you shall afflict yourselves [by fasting in penitence and humility] and present an offering made by fire to the Lord.

²⁸ And you shall do no work on this day, for it is the Day of Atonement, to make atonement for you before the Lord your God.

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].