Devils Exist - Jesus Says So

Two thousand years ago Jesus preached that devils existed:

 Jesus replied, "Have I not chosen you, the Twelve? Yet one of you is a devil!" (John 6:70) 

And all these years later the leaders of his ratbag religion are still preaching the same rubbish: 

Pope Francis has helped boost the popularity of exorcisms with his frequent warnings against the devil. 
http://www.ibtimes.com/pope-francis-exorcism 

U.S. televangelist Pat Robertson said on Wednesday that earth-quake devastated Haiti was cursed because of a past pact that the island’s inhabitants had made with the devil.
http://blogs.reuters.com/faithworld/2010/01/13/pat-robertson

 
So it is no surprise when one of the congregation jumps up out of the pew and goes in search of devils to destroy: 

The granddaughter of acclaimed actor Morgan Freeman was stabbed to death on a Manhattan sidewalk early Sunday during what law-enforcement sources and witnesses described as an “exorcism” at the hands of her ranting boyfriend.

“Get out, devils! I cast you out, devils! In the name of Jesus Christ, I cast you out!” the killer yelled.
[...]
“Jesus Christ is born!” he shouted maniacly over her body.
http://nypost.com/2015/08/16/man-stabs-ex-girlfriend-to-death

And all around the world the followers of Jesus are trying to distance themselves from the killer by declaring that 'he was never a real Christian in the first place'. [All swans are white if you don't count the black ones.]