Yom Ha-Kippurim
Yom Ha-Kippurim (the Day of Atonements), popularly known by the slang phrase Yom Kippur, is the happiest day of the Jewish calendar — a day of fasting, prayer, and repentance. In Temple times, it was the one day of the year when the High Priest entered the innermost sanctuary of the Temple in Jerusalem, the Holy of Holies, to perform the day's central atonement rites on behalf of the entire nation. That the day's most sacred ritual could take place nowhere but inside the Temple in Jerusalem is itself an early marker of how completely Jewish religious life was tied to that specific location.
The Closing Declaration
Unlike other days, Yom Ha-Kippurim has five central prayers that day, and it final prayer service ends, like the liturgy of the Passover Seder, with the congregation declaring together: "Next year in Jerusalem!" After a full day of fasting and the year's most intense collective prayer, the very last words spoken are not about the year ahead in the abstract, but about Jerusalem specifically.
This is consistent with the usual daily prayer recited on ordinary days — includes explicit petitions for the rebuilding of Jerusalem and the in-gathering of the exiles, intensified for the happiest day of the year. Yom Ha-Kippurim's date, like all the festivals, is set by the Hebrew calendar, keeping the day anchored to the same land-based reckoning of time observed by Jewish communities everywhere.
That the single most solemn day in Jewish religious life — a day devoted to the relationship between the individual, family, the community, and God — closes with a collective wish to return to Jerusalem underscores just how central the Land of Israel remains even to Judaism's most inward-looking, spiritual observance.