Leviticus 16:29-31

“On the tenth day of the appointed month in early autumn, you must deny yourselves. Neither native-born Israelites nor foreigners living among you may do any kind of work. This is a permanent law for you. On that day offerings of purification will be made for you, and you will be purified in the LORD’s presence from all your sins. It will be a Sabbath day of complete rest for you, and you must deny yourselves. This is a permanent law for you.