It may be that Satan has little cause to fear most preaching. Yet past experiences sting him to rally all his infernal army to fight against God's people praying.
There has been in our time a lack of reliance on language and a lack of experimentation which are frightening to anyone who sees them as symptoms. We know the phenomenon of stage-fright: it holds the player shivering, incapable of speech or action. Perhaps there is an audience-fright which the play can feel, which leaves him with these incapacities.