Isa 14:12 How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations!
In context we are talking about the king of Babylon, a type of satan, but it can be applied to lucifer as well. Fallen, kicked out of heaven, sort of like Adam and Eve were kicked out of Eden. The king of Babylon did the work of Lucifer, and both were at times used by God who is supreme, to judge a people. O Lucifer, bringing light, son of the morning. An angel of light, so beware of angels who speak to you, for they may be with lucifer.
There are four falls of Lucifer.
The first fall was from a sacred position in heaven to the earth, something that happened before the fall of Adam and Eve.
Ezek 28:14 Thou 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.
Ezek 28:15 Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee.
Ezek 28:16 By 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.
Jesus referred to this fall:
Luke 10:18 And he said unto them, I beheld Satan as lightning fall from heaven.
The second fall, satan will fall from having access to 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.
The third fall, he will be cast in the bottomless pit during the millennium and released at the end, to deceive many.
Rev 20:1 And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand.
Rev 20:2 And he laid hold on the dragon, that old serpent, which is the Devil, and Satan, and bound him a thousand years,
Rev 20:3 And cast him into the bottomless pit, and shut him up, and set a seal upon him, that he should deceive the nations no more, till the thousand years should be fulfilled: and after that he must be loosed a little season.
The fourth fall the devil, Lucifer, will be cast into the lake of fire, to be tormented forever.
Rev 20:10 And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever.
Isa 14:13 For thou hast said in thine heart, I will ascend into heaven, I will exalt my throne above the stars of God: I will sit also upon the mount of the congregation, in the sides of the north:
The beast will sit in the temple, filled with the devil, in the end times.
2 Th 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;
2 Th 2:4 Who opposeth and exalteth himself above all that is called God, or that is worshipped; so that he as God sitteth in the temple of God, showing himself that he is God.
Isa 14:14 I will ascend above the heights of the clouds; I will be like the most High.
This was the fall of Lucifer, exalting himself as God.
Isa 14:15 Yet thou shalt be brought down to hell, to the sides of the pit.
Isa 14:16 They that see thee shall narrowly look upon thee, and consider thee, saying, Is this the man that made the earth to tremble, that did shake kingdoms;
Satan was not a man, but the false christ was a man. We the saints will see him cast into the sides of the pit and we will say it is justice. We shall judge the angels with Christ Jesus.
1 Cor 6:2 Do ye not know that the saints shall judge the world? and if the world shall be judged by you, are ye unworthy to judge the smallest matters?
1 Cor 6:3 Know ye not that we shall judge angels? how much more things that pertain to this life?
Isa 14:17 That made the world as a wilderness, and destroyed the cities thereof; that opened not the house of his prisoners?
When the king of literal Babylon fell, his weakness was exposed and others were amazed that he once had so much power, and so many feared him. The same will happen when the king of spiritual Babylon falls. People will see him for what he really is and be amazed at how much power he actually had.(Guzik)
Eph 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.
We need not be afraid of the evil ones. Stay close to God and speak with the authority of his word. All will be judged through Jesus by his word. We are in Christ Jesus appointed as kings and priests with authority.
1 John 4:4 Ye are of God, little children, and have overcome them: because greater is he that is in you, than he that is in the world.
Rom 16:20 And the God of peace shall bruise Satan under your feet shortly. The grace of our Lord Jesus Christ be with you. Amen.