No such thing as a "Lucifer", it's a made up word from Jerome's Vulgate.
(Isa 14:12 KJV) How art thou fallen from heaven, O Lucifer (heylel), son of the morning! how art thou cut down to the ground, which didst weaken the nations!
No such thing as a "lucifer" - the reference to satan is bogus and a Christian Mythstake that needs to be thrown out.
Adam Clarke's commentary
"Verse 12.
O Lucifer, son of the morning
The Versions in general agree in this translation, and render heilel as signifying Lucifer, the morning star, whether Jupiter or Venus; as these are both bringers of the morning light, or morning stars,annually in their turn.
And although the context speaks explicitly concerning Nebuchadnezzar, yet this has been, I know not why, applied to the chief of the fallen angels, who is most incongruously denominated Lucifer, (the bringer of light!) an epithet as common to him as those of Satan and Devil. That the Holy Spirit by his prophets should call this arch-enemy of God and man the light-bringer, would be strange indeed.
But the truth is, the text speaks nothing at all concerning Satan nor his fall, nor the occasion of that fall, which many divines have with great confidence deduced from this text.
O how necessary it is to understand the literal meaning of Scripture,that preposterous comments may be prevented! Besides, I doubt much whether our translation be correct. heilel, which we translate Lucifer, comes from yalal, yell, howl, or shriek, and should be translated, "Howl, son of the morning;" and so the Syriachas understood it; and for this meaning Michaelis contends: see his reasons in Parkhurst, under halal.
Verse13.
I will ascend into heaven
I will get the empire of the whole world. I will exalt my throne above the stars of God-above the Israelites, who are here termed the stars of God.
Se the Targum of Jonathan, and R. D. Kimchi. This chapter speaks not of the ambition and fall of Satan, but of the pride, arrogance, and fall of Nebuchadnezzar."