Leviticus 23:27, 28, 29, 32
Leviticus 23:27 NIV
“The tenth day of this seventh month is the Day of Atonement. Hold a sacred assembly and deny yourselves, and present a food offering to the LORD.
Leviticus 23:28 NIV
Do not do any work on that day, because it is the Day of Atonement, when atonement is made for you before the LORD your God.