They see shadows as creations of the Lord of Light, who are the servants of light and the children of fire. The red priests of R'hllor associate fire with life. His nemesis, the Great Other, whose name may not be spoken, is known as the Lord of Darkness, the Soul of Ice, the God of Night and Terror. R’hllor is also called the Lord of Light, the Heart of Fire, the God of Flame and Shadow. They are locked in an eternal struggle over the fate of the world a struggle that, according the ancient prophecies from the books of Asshai, will only end when Azor Ahai, the messianic figure, returns wielding a flaming sword called Lightbringer, the Red Sword of Heroes, and raises dragons from stone. The religion is based on a dualistic, manichean view of the world: R'hllor, the god of light, heat, and life, and R'hllor's antithesis the Great Other, the god of ice and death.