Leviticus 23:28-30

Expanded Bible

²⁸ Do not do any work on that day, because it is the Day of ·Cleansing [Atonement]. On that day the priests will go before the Lord and ·perform the acts to make you clean from sin so you will belong to the Lord [make atonement for you].

²⁹ “Anyone who ·refuses to give up food [or does not deny himself] on this day must be cut off from the people. ³⁰ If anyone works on this day, I will destroy that person from among the people.