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I heard on reliable testimony that a priest performing an exorcism demanded of the devil under subjection that he reveal what his name is and the devil replied that his name is "Allah." In that context a possessing devil is not able to lie, and must divulge his real name.
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Being in power of the Church to BIND the devil, the priest then made the devil promise to demonstrate some time in the future when the priest would invoke him to show his effect on other people. This was done during the exorcism, and the exorcism was completed effectively.
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A few weeks later, the same priest was in Saudi Arabia overlooking a public square with hundreds of people walking around in the area before him as he looked out upon them from a higher level, out of a window. The priest invoked the devil he had exorcised by name, commanding him to show his power over all those people walking to and fro outside in the plaza. Immediately, all the walking people stopped in their tracks, and turned to stare for a second or two in the direction of the priest up in that window. Then they all turned forward again and resumed their walking as though they were entirely unaware of having paused just then.
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Think of it as a flash mob acting on cue, but without having planned on doing so.
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The priest was convinced of the power Allah the devil has over people of that region and it should never be underestimated, for they know not what influence it is that they are under.
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