LEV 23:32

32 That day will be a day of complete rest for all of you, and on that day you must ◄fast/abstain from eating food► [to show that you are sorry for having sinned]. That day of rest and ◄fasting/abstaining from eating food► will begin on the evening before the day in which you ask me to forgive you for your sins, and it will end on the evening of the following day.”