2Th 2:3 Let no man deceive you by any means: for [that day shall not come], except there come a falling away first, and that man of sin be revealed, the son of perdition; What day? the Lords Day first must come,falling away and Son of pertion(another name for Satan) as is the man of sin) Rev.12:7And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels, (Dragon is Another name for Satan)Rev.12:8 And prevailed not; neither was their place found any more in heaven. Rev 12:9 And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him. Rev 12:12 Therefore rejoice, [ye] heavens, and ye that dwell in them. Woe to the inhabiters of the earth and of the sea! for the devil is come down unto you, having great wrath, because he knoweth that he hath but a short time. Rev 12:13 And when the dragon saw that he was cast unto the earth, he persecuted the woman which brought forth the man [child]. Luk 10:18 And he said unto them, I beheld Satan as lightning fall from heavenRev. 9:1 And the fifth angel sounded, and I saw a star fall from heaven unto the earth: and to him was given the key of the bottomless pit. this star is the morning star an angel (lucifer to be exact another of his names) 2And he opened the bottomless pit; and there arose a smoke out of the pit, as the smoke of a great furnace; and the sun and the air were darkened by reason of the smoke of the pit. 3And there came out of the smoke locusts upon the earth: and unto them was given power, as the scorpions of the earth have power. (See the book of Joel for this locust army of Satans) 4And it was commanded them that they should not hurt the grass of the earth, neither any green thing, neither any tree; but only those men which have not the seal of God in their foreheads. 5And to them it was given that they should not kill them, but that they should be tormented five months: and their torment was as the torment of a scorpion, when he striketh a man. (side study how the scorpion kills its prey as we know God uses nature to tell many indepth things) 6And in those days shall men seek death, and shall not find it; and shall desire to die, and death shall flee from them. 7And the shapes of the locusts were like unto horses prepared unto battle; and on their heads were as it were crowns like gold, and their faces were as the faces of men. 8And they had hair as the hair of women, and their teeth were as the teeth of lions. 9And they had breastplates, as it were breastplates of iron; and the sound of their wings was as the sound of chariots of many horses running to battle. 10And they had tails like unto scorpions, and there were stings in their tails: and their power was to hurt men five months. This is not a physical hurt but a spiritual hurting 11And they had a king over them, which is the angel of the bottomless pit, whose name in the Hebrew tongue is Abaddon, but in the Greek tongue hath his name Apollyon. (another name for Satan)Isa 14:12 How you have fallen from heaven, O morning star, son of the dawn! You have been cast down to the earth, you who once laid low the nations! 13 You said in your heart, "I will ascend to heaven; I will raise my throne above the stars of God; I will sit enthroned on the mount of assembly, on the utmost heights of the sacred mountain. [c] 14 I will ascend above the tops of the clouds; I will make myself like the Most High." 15 But you are brought down to the grave, to the depths of the pit. 16 Those who see you stare at you, they ponder your fate: "Is this the man who shook the earth and made kingdoms tremble, Eze 28:11 Moreover the word of the LORD came unto me, saying, 12Son of man, take up a lamentation upon the king of Tyrus, and say unto him, Thus saith the Lord GOD; Thou sealest up the sum, full of wisdom, and perfect in beauty. 13Thou hast been in Eden the garden of God; every precious stone was thy covering, the sardius, topaz, and the diamond, the beryl, the onyx, and the jasper, the sapphire, the emerald, and the carbuncle, and gold: the workmanship of thy tabrets and of thy pipes was prepared in thee in the day that thou wast created. 14Thou art the anointed cherub that covereth; and I have set thee so: thou wast upon the holy mountain of God; thou hast walked up and down in the midst of the stones of fire. 15Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee. 16By the multitude of thy merchandise they have filled the midst of thee with violence, and thou hast sinned: therefore I will cast thee as profane out of the mountain of God: and I will destroy thee, O covering cherub, from the midst of the stones of fire. 17Thine heart was lifted up because of thy beauty, thou hast corrupted thy wisdom by reason of thy brightness: I will cast thee to the ground, I will lay thee before kings, that they may behold thee. 18Thou hast defiled thy sanctuaries by the multitude of thine iniquities, by the iniquity of thy traffick; therefore will I bring forth a fire from the midst of thee, it shall devour thee, and I will bring thee to ashes upon the earth in the sight of all them that behold thee. 19All they that know thee among the people shall be astonished at thee: thou shalt be a terror, and never shalt thou be any more.Now as I said you wanna know what the early church father taught that learned from the apostels try reading the free book I gave you the link to.