The greatest weapon the "true devil" has is actual "evil" power, which is a real thing, an actual emotional, physical feeling, that can induce the brain to see, hear, taste, smell, and feel things that are not real.
This tool is called:
"Cognitive dissonance refers to a situation involving conflicting attitudes, beliefs or behaviors. This produces a feeling of mental discomfort leading to an alteration in one of the attitudes, beliefs or behaviors to reduce the discomfort and restore balance." Lucifer, the god of this world, is another name that the Real Illuminati® call our pride and ego.
When our pride and ego is threatened ... or better put, when we are confronted with "a situation involving conflicting attitudes, beliefs or behaviors" ... such as when an LDS/Mormon reads The Sealed Portion of the Book of Mormon ... the human brain begins to emit actual neurotransmitters that "produce a feeling of mental discomfort."
Just like our brains can produced dreams, beyond what seems to be our conscious control, cognitive dissonance can cause our brain to produce "evil feelings" and produce sensory experiences that a religious person can easily associate with the devil.
The Real Truth™ will bring out the devil in most people. :-)