Biblical speculative fiction
Biblical speculative fiction is speculative fiction that uses Christian themes and incorporates the Christian worldview. (It is thus distinct from speculations on the Bible and/or Christianity such as Pilgrim's Progress, The Shack, or The Da Vinci Code.) The difference between biblical speculative fiction and general Christian speculative fiction is that the Christian nature of the story is overt.
Source: Wikipedia — Biblical speculative fiction (CC BY-SA 4.0)