Yom Kippur is not a biblical holiday
Yom Hakippurim: A Holiday The Romans Destroyed Like Rosh Hashanah, Yom Kippur does not exist in the Bible. It replaces another day known as Yom Hakippurim. Yom Kippur is singular, “day of atonement,” while Yom Hakippurim is plural, “day of atonements.” The biblical Yom Hakippurim is mentioned in Leviticus 16:29–31, 23:27–32, and Numbers 29:7–11. No work [...]