What is the author's style in The Dark Tower: The Gunslinger by Stephen King?

The language of this story is simple, American English. However, the text is peppered with archaic, even biblical, language that highlights the importance of religion and mysticism in the narrative. King also refers to a language called the High Speech, which is the language of Roland's world and is used only by those of the high court. The people of lower rank and children in Roland's world speak in what is called the low tongue. This manner of speaking is also used in the future world the gunslinger now inhabits.