....rather:
One of the four beasts of Daniel and seven Dragon heads of Revelation.
Daniel Chapter 7
3 | And four great beasts came up from the sea, diverse one from another. |
Revelation Chapter 12
3 | And there was seen another sign in heaven: and behold, a great red dragon, having seven heads and ten horns, and upon his heads seven diadems |
Ephesians Chapter 6
12 | For our wrestling is not against flesh and blood, but against the principalities, against the powers, against the world-rulers of this darkness, against the spiritual hosts of wickedness in the heavenly places. |
This passage is different as Scripture states it is a taunt to that king (Nebuchadnezzar II).
The ANE pagan tradition associated kings with celestial bodies. Here the taunt uses the morning star to show how far God will cause him to fall.
It would be different if Scripture presented this as a prophecy. But it doesn't. I'd be different if Scripture did not identify the subject of the taunt and what was to come being the destruction of that specific enemy for the reasons listed in the passage.
But Scripture tells us who this is directed at, why, and what God was going to do.
To consider it a proper name for Satan is to deny Scripture (to deny who God says this is directed at, why it was directed at this king, and the outcome God would bring about).
Another issue is the fact that for thousands of years after Isaiah was written nobody viewed Lucifer as Satan's name.
The passage is not about Christians struggling with spiritual things. It is an OT passage about God delivering Israel from a pagan king.
Same with God delivering Israel from Egypt.
KJVO cultists use the "Lucifer myth" to call any other translation satanic. Technically this has to mean the original language sources and every translation in any language as "Lucifer" is not a name for Satan there either.
That said, the passage (one aspiring greatness and being brought low) can apply to Satan.
