The Day of Atonement — the one day of the year the high priest entered the Holy of Holies (Leviticus 16)
also written: yom kippur, yom hakippurim, yom ha-kippurim
In Scripture World English Bible
“It shall be a statute to you forever: in the seventh month, on the tenth day of the month, you shall afflict your souls, and shall do no kind of work, the native-born, or the stranger who lives as a foreigner among you: for on this day shall atonement be made for you, to cleanse you; from all your sins you shall be clean before Yahweh.
“However on the tenth day of this seventh month is the day of atonement: it shall be a holy convocation to you, and you shall afflict yourselves; and you shall offer an offering made by fire to Yahweh.
Then you shall sound the loud trumpet on the tenth day of the seventh month. On the Day of Atonement you shall sound the trumpet throughout all your land.
“‘On the tenth day of this seventh month you shall have a holy convocation. You shall afflict your souls. You shall do no kind of work;