Isaiah 29:1 Kabbalah

ה֚וֹי אֲרִיאֵ֣ל אֲרִיאֵ֔ל קִרְיַ֖ת חָנָ֣ה דָוִ֑ד סְפ֥וּ שָׁנָ֛ה עַל־שָׁנָ֖ה חַגִּ֥ים יִנְקֹֽפוּ׃

Ah, Ariel, Ariel, the city where David encamped! Add ye year to year, Let the feasts come round!

Read kabbalistic (mystical) interpretation of Isaiah 29:1: and classical mystical sources.