that Ardyn Lucis Caelum is literally Lucifer. I know, we’ve all made so many jokes and references before, but I never stopped to think about the translation of his name as a whole phrase.
“Ardent Light of Heaven” is the literal translation. And, the ardent star is a word that was often used to refer to the planet Venus, the Morning Star (aka Lucifer, as it was also known in Roman times).
It’s “l’astre amoureux” in some French poetry. And just think how fitting a name it truly is for the once-Healer and Saviour:
“Comme l’astre amoureux dont la douce clarté | Dissipe au matin les ténèbres As the Morning Star with its sweet clarity | Dispels the darkness when morning comes” (Oeuvres Poétiques du Mme Dufrenoy, 1827)
He certainly did try to dispel the darkness.
And then, of course, there’s the fall from grace and all that follows.
Ardyn is a Lucifer parallel, not a Jesus parallel.
Finally, some more mythology nerd things: Venus had two sides in Greek mythology, which the Romans later adopted. In the morning, Venus was called the Morning Star/Phosphorus/Lucifer. But in the evening it was an entirely different personification: Vesperus/Hesperos, the Evening Star. Which is, definitely the Somnus side of the brothers, which Noctis later goes on to play the symbolic part of in their final fight.
Here’s a Lucifer family tree from Ovid’s Metamorphoses: