Why is the story of Adam and Eve called the Fall?
While the whole story of Adam and Eve is not referred to as the Fall, the section where they disobeyed God is so called because this was when sin entered into the perfect world. Sin and all its effects are degenerative in nature. Formerly, the world was a perfect place and Adam and Eve were in a perfect relationship with God. When sin entered the world, this relationship was then broken. They had fallen from perfection and grace.