Many people buy Christian books to grow in their faith, but they do not finish reading them because they become discouraged when they find so many words whose meaning they do not know. For example, do you know what the following words mean: abadon, adiaphora, anchorite, armageddon, demiurge, eschatology? Do you know movements such as agnosticism, Augustinianism, Arminianism, Arianism, Calvinism? Do you know what adoptionism, annihilationism, antinomianism, creationism, deism or dualism propose? What do expressions such as the "abomination of desolation", "binding and loosing", "criticism of forms", "intermediate state" refer to? Well, if you are looking for a concise and clear definition of a fundamental theological word, in your hands you have one of the best reference tools and an essential help for reading Christian books.