Leviticus 23:27

27“The tenth day of this seventh month is the Day of
atone/ atonement: A theological term for God's provision to deal with human sin. In the OT, it primarily means purification. In some contexts forgiveness, pardon, expiation, propitiation, or reconciliation is included. The basis of atonement is substitutionary sacrifice offered in faith. The OT sacrifices were types and shadows of the great and final sacrifice of Jesus on the cross.
Atonement. b You are to hold a sacred assembly and practice self-denial;
Traditionally, fasting, abstinence from sex, and refraining from personal grooming
d you are to present a fire offering to the Lord.
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