Told in three parts, with a change in POV in between, the story mashes Christian mythos and horror, through the arrival of the apocalypse. As such, it takes an interesting approach on the theme, by going to the earliest use of the phrase in the blink of an eye, Through this the re-contextualisation of religious themes inside a horror framing, the game discusses religion and faith, change (or lack thereof), and what happens after death.
The writing, being quite flowery and evocative, tries to emulate old English to set the story in late Ancient Times - though only for spoken words, the rest of the text using modern prose. I found it a bit jarring, as little of the setting is framed from being in this time.
Finally, the ambiguous and unchanging ending left me unsatisfied. Your choices, which are recapped at the end, are supposed to give you an answer to why the ending is the way it is, or at least lead you towards your own interpretation. But I don't feel like it quite worked, for any choice I made. I didn't understand why only one of the two, even if both are in this situation, finds solace at the end...
I think quite a bit of the story stands on a prerequisite knowledge of Christian mythos, and assumes that the players has those, to make enough of an impact.