Wow that's some generously detailed feedback! I was quite tired of all the rinse and repeat formula horror games which is why I tried an experimental "slow burn" approach without any ear bursting jumpscares from the get go.
The voice line says
"One ascended to the heavens, one stands at the gates of hell, one waits for eternal slumber, from the closet it can tell"
You're one of the few people that picked up on the significance of the voice on the radio. I realized that many people dismiss those kind of things in horror games because it's normally used as a cheesy method to create tension and rarely ever means anything.
The subtitles are a fantastic idea! Unfortunately I don't have the game files anymore as I recently replaced my PC so I won't be updating this game anymore :(