אִם־יִתָּקַ֤ע שׁוֹפָר֙ בְּעִ֔יר וְעָ֖ם לֹ֣א יֶחֱרָ֑דוּ אִם־תִּהְיֶ֤ה רָעָה֙ בְּעִ֔יר וַיהוָ֖ה לֹ֥א עָשָֽׂה׃
Shall the horn be blown in a city, And the people not tremble? Shall evil befall a city, And the LORD hath not done it?
Read kabbalistic (mystical) interpretation of Amos 3:6: and classical mystical sources.