While your resourcefulness is evident, Isaiah 14’s reference to being enthroned on the “Mount of assembly” [other translations say "Mount of Congregation] faces different kinds of tests of interpretation, depending on whether the narrative is an effort to mock the last King of Babylon - - or to mock Lucifer [Lucifer, Son of the Morning], as the spiritual guide of the King of Babylon; see ramifications below:
The commentary below comes from David Guzik’s “Study Guide for Isaiah 14”
- (Isa 14:12-15) The fall of Lucifer.
“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; I will ascend above the heights of the clouds, I will be like the Most High.’ Yet you shall be brought down to Sheol, to the lowest depths of the Pit.”
a. How you are fallen from heaven, O Lucifer, son of the morning! Here, the prophet identifies the king of Babylon as Lucifer, son of the morning. Some debate if Lucifer is a name or a title; the word means morning star or day star, referring to a brightly shining object in the heavens. Whether it is a title or a name makes little difference; this once brightly shining king of Babylon is now fallen from heaven."
[end of quote]