The devil goes about mostly unnoticed doing his evil deeds, causing pain and suffering anywhere he can. He laughs at the cartoon drawings of him in red with horns and a tail. He often appears as an angel of light, a wolf in sheep's clothing. He seeks those he can devour, kill, or destroy. The devil hates humanity and will do whatever he is allowed to do by each of us.
He is misery, loneliness, hatred, jealousy, temptation, murder, adultry, bitterness, lust, greed, abuse, anger, rage, self-pity, depravity, laziness, envy, lying, stealing, greed, dirty jokes, dirty words, hunger, pornography, disease, slavery, racism, pride, selfishness, quarrelsome, wars, oppression, fear, anxiety, self-hatred, darkness, vengeful, disrespect, poverty, gossip; whatever causes the ills of mankind.
So what could the Devil possibly fear with all this power he has over us?
The Devil fears people believing he really exists. He fears recognition of his evil poured out on us all. When we belive he exists and are able to resist his temptations, then he has no power over us. Resist the Devil and he will flee from you, the Bible tells us.