The Four Falls of Lucifer
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 still talking about the king of Babylon, a type of satan, but it can be applied to the devil as well, Lucifer. Fallen, kicked out of heaven, sort of like Adam and Eve were kicked out of Eden. O Lucifer, bringing light, son of the morning. The king of Babylon did the work of Lucifer, and both were at times used by God who is supreme, to judge a people.
There are four falls, of Lucifer and this verse refers to the fourth fall.
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.
Finally, 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.