Leviticus 23:26-32

26 Day of Atonement
The Lord said to Moses,

27 “The tenth day of this seventh month is the Day of Atonement. Hold a sacred assembly and deny yourselves, and present an offering made to the Lord by fire.

28 Do no work on that day, because it is the Day of Atonement, when atonement is made for you before the Lord your God.

29 Anyone who does not deny himself on that day must be cut off from his people.

30 I will destroy from among his people anyone who does any work on that day.

31 You shall do no work at all. This is to be a lasting ordinance for the generations to come, wherever you live.

32 It is a sabbath of rest for you, and you must deny yourselves. From the evening of the ninth day of the month until the following evening you are to observe your sabbath.”