Interesting thing I saw people talking about how Lord of the Hammer and Lord of the Rings are supposed to imply Gerson and Tolkien are similar. They both created works with heavy religious themes. This led me down a rabbithole with what Tolkien would call "Sub-creation" and how it relates to creation and world building and I think its especially pertinent to Deltarune.
It's hard to tl;dr it so do your own research but basically.
Sub-creation is the philosophy that Tolkien had that puts God as the creator of everything, and we are just "Sub-creators" or "little makers". Our desire to create is a product of being made in the image of the Creator that created us, who liked to create, so naturally, we do too. While God is all powerful and creates from nothing, we create within the bounds of the world that God has given us using our experiences and imagination. By creating complex and well crafted worlds a "little maker" can reflect God in a way that brings joy, meaning, and reprieve from the harsh reality of the "Primary World". In some cases they can create things that God didn't when he created the "Primary World", thus creating things that would normally be considered impossible. Though, Tolkien emphasizes the original creator as the one to be revered above all, and sub-creators shouldn't assume divinity, or place their creation on the same level as God's, merely reflecting a part of his ability to create. Tolkien felt that creation was the purest form of expressing free will.
Very interesting to think about with the idea that the prophecy is rewritten multiple times, and Gerson being an author that seems to reflect a similar idea, based on a series with a similar sounding name. It also checks out with the idea of creation, derivation, and perception being a heavy theme of Deltarune. Also the implications with the relationships between lightners and darkners.
Shoutouts to the Youtuber that ends up plagiarizing my post, because I basically wrote a whole fucking video for you.