The devices of demons are dark, destructive and compelling schemes, programs, intentions, stratagems and wiles that are both actionable and have the capacity to override the human will. Demons cannot be wished away, thought away or ignored away. They must be brutally cast out by the finger of God. Otherwise the kingdom will not come; the will of God will not be done on earth as it is in heaven. The Lord Himself has said,

But if I cast out demons by the Spirit of God, surely the kingdom of God has come upon you.  (Matthew 12:28-29, NKJV)