According to the Book of Revelation in the New Testament of the Christian Bible, Armageddon is the prophesied location of a gathering of armies for a battle during the end times, which is variously interpreted as either a literal or a symbolic location. The term is also used in a generic sense to refer to any end-of-the-world scenario. In Islamic theology, Armageddon is also mentioned in Hadith as the Greatest Armageddon or Al-Malhama Al-Kubra.

Eschatology concerns expectations of the end of the present age, human history, or the world itself. The end of the world or end times is predicted by several world religions, which teach that negative world events will reach a climax. Belief that the end of the world is imminent is known as apocalypticism, and over time has been held both by members of mainstream religions and by doomsday cults. In the context of mysticism, the term refers metaphorically to the end of ordinary reality and to reunion with the divine. Religions treat eschatology as a future event prophesied in sacred texts or in folklore. While other religions may have concepts of renewal or transformation after significant events, the explicit description of a new earth is primarily found in Christian teachings within the context of eschatology, this description can be found in Chapter 21 of the Book of Revelation.