Isaiah 14:12-14 How you are fallen from heaven, O Lucifer,son of the morning!
How you are cut down to the ground,You who weakened the nations!
For you have said in your heart:
‘I will ascend into heaven,
I will exalt my throne above the stars of God;
I will also sit on the mount of the congregation
On the farthest sides of the north;
14 I will ascend above the heights of the clouds,
I will be like the Most High.’.
These verse is used to prove that Satan is a fallen angel.
The words “devil” , “satan” and “angel” never occur in this chapter. This is the only place in Scripture where the word “Lucifer” occurs.
There is no evidence that Isaiah 14 is describing anything that happened in the garden of Eden; if it is, then why are we left 3,000 years from the time of Genesis before being told what really happened there?
Lucifer is identified in the chapter, but not with a rebel angel. It is clearly stated: "Take up this proverb2 against the king of Babylon, and say, How hath the oppressor ceased!" (vs. 4). (The preceding chapter is a prophecy against Babylon itself, but now the prophecy is directed against the king of Babylon). This is fullfilled in daniel chapter 4 with Nabuzzar going mad and daniel 5 with the writing on the wall A secondary fulfillment would be the overthrow of Gog or the Antichrist at Armageddon
Why is Lucifer punished for saying, “I will ascend into heaven” (v. 13), if he was already there?
5. Lucifer is to rot in the grave: “your splendour is brought down to the grave...and the worms cover you” (v. 11). Seeing angels cannot die (Lk. 20:35-36), Lucifer therefore cannot be an angel; the language is more suited to a man.
"Ascending to heaven" is symbol for increase in pride or exaltation, and "falling from heaven", symbolic complete humiliation. See Jer. 51:53 (refers to Babylon); Lam. 2:1; Matt. 11:23 (refers to Capernaum).
The meaning of Lucifer: day-star (mbd) "light-bearer" 1) shining one, morning star,
The passage in Isaiah regarding the day-star, or Lucifer (A.V.), is believed by many to refer to the fall from heaven of angels who had sinned against God; Lucifer, their leader, is supposed to be Satan. In so far as the literal understanding is concerned, this is a mistake; the text has no such implications. It refers to the fall of the king of Babylon, who had ruled in such brilliance and greatness, in such pomp and splendor, that Isaiah likened him to the morning star (Isa. 14:12; II Pet. 1:19).
The text in Isaiah, "O Lucifer, son of the morning!" signifies man's uplifting of the ruling ego (represented here by the king of Babylon), and attributing to the outward senses those qualities of light, understanding, and greatness that belong only to God. This is unfavourable and comes from the carnal mind in the individual; it must be overthrown, cast down and out of consciousness
Lucifer the thinking of the flesh or carnal mind in man that has fixed ideas in opposition to Truth. Lucifer assumes various forms in man's consciousness, among which may be mentioned egotism, a puffing up of the personality; self deception. This "self deception" makes man believe that he is genetically good.