Demons work in order.
          Ephesians 1:21 Far above all principality, and power, and might, and dominion, and every name that is named, not only in this world, but also in that which is to come.
           Ephesians 6:12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.