Since the dawn of history and culture, people have argued about the number, names and natures of supernatural beings known as "gods" in the Earth language of English. The classic classical example is that of the god of the sea, named Poseidon by the ancient Greeks, Neptune by the ancient Romans.
Arguments about deity tend to be less about names and numbers (666 anyone?) and more about natures, ie the attributes that distinguish a particular deity from others. For the ancient Greeks and Romans, the attributes of the god of the sea included living in the ocean, carrying a trident and being very skilled at training (land-)horses.
(I have no idea what the connection is between sea-gods and land-horses. Perhaps it's that you can lead a horse to water, but to make him drink you need a sea-god.