ISIS also organizes hashtag campaigns, skewing trending terms by encouraging supporters to repeatedly Tweet various hashtags such as ... #CalamityWillBefallUS. The goal is that these terms will then trend on Twitter, vastly increasing the visibility of tweets with ISIS’s message. (Anti-Defamation League, "Hashtag Terror: How ISIS Manipulates Social Media", July 11, 2014.)So ISIL said "Calamity will befall US".
Who else has been saying such things?
Now of course there are many differences between the COGs and ISIL. The COGs are pacifist and have no history of waging violence. Whereas ISIL is a terrorist organization.
But it is noteworthy that both should happen to claim that some kind of catastrophe will soon befall the United States.
The COGs say this to claim that safety may only be found by joining a COG group (and paying tithes to them).
ISIL said it in a failed attempt to prevent the Obama Administration from intervening against ISIL's terrorism and deadly attacks against the internationally recognized government of Iraq that has horrified the entire world.
Let us learn from this to avoid extremism.