In the days of the voice of the seventh angel when he shall begin to sound, the mystery of God should be finished as he has revealed to his servants the prophets.War against principalities "For we wrestle not against flesh and blood, but against principalities, against powers, against rulers of darkness of this world, and against spiritual wickedness in high places" (Ephe.6:11-13).Who are these "principalities" spoken of by Apostle Paul?