Christian mythology is the body of myths associated with Christianity. The term encompasses a broad variety of stories and legends. Various authors have used it to refer to the mythological and allegorical elements found in the Bible, such as the story of the Leviathan. The term has been applied to myths and legends from the Middle Ages, such as the story of Saint George and the Dragon, the stories of King Arthur and his Knights of the Round Table, and the legends of the Parsival. John Milton's epic poem Paradise Lost has been classified as a work of "Christian mythology" by multiple commentators. The term has also been applied to modern stories revolving around Christian themes and motifs, such as the writings of C. S. Lewis, J. R. R. Tolkien, Madeleine L'Engle, and George MacDonald.
Mythological themes and elements can be found throughout Christian literature, including recurring myths such as ascending to a mountain, the axis mundi, myths of combat, descent into the Underworld, accounts of a dying-and-rising god, flood stories, stories about the founding of a tribe or city, and myths about great heroes of past, paradises, and self-sacrifice.
In ancient Greek, muthos, from which the English word "myth" derives, meant "story, narrative." Early Christians contrasted their sacred stories with "myths", by which they meant false and pagan stories.