Shall a trumpet be blown in the city, and the people not be afraid? shall there be calamity in a city, and the LORD has not done it?
All Commentaries on Amos 3:6 Go To Amos 3
Cyril of Alexandria
By evil in the text that is caused by God in cities, therefore, we should understand not depravity-perish the thought! But rather harassment, or any wrathful response that he would make to sinners with the intention of converting them to what is more seemly.