The "Four Horses" typically refer to the Four Horsemen of the Apocalypse, figures from the Christian Bible's Book of Revelation. They symbolize different aspects of the end times: Conquest, War, Famine, and Death. Each horseman rides a different colored horse, representing their unique roles in the unfolding of apocalyptic events. The first horseman rides a white horse, often associated with Conquest or Pestilence. The second rides a red horse, symbolizing War and bloodshed. The third horseman rides a black horse, representing Famine, while the fourth rides a pale horse, embodying Death. Together, they illustrate the chaos and suffering that precede the final judgment.