The reason, Raphael explains, that God created man was to replace the empty space that the fallen angels have left in heaven. Raphael then tells of how God created man and all the universe in seven days. Adam himself remembers the moment he was created and, as well, how he came to ask God for a companion, Eve. Raphael leaves.
The next morning, Eve insists on working separately from Adam. Satan, in the form of serpent, finds her working alone and starts to flatter her. Eve asks where he learned to speak, and Satan shows her the Tree of Knowledge. Although Eve knows that this was the one tree God had forbidden that they eat from, she is told by Satan that this is only because God knows she will become a goddess herself. Eve eats the fruit and then decides to share it with Adam.
Adam, clearly, is upset that Eve disobeyed God, but he cannot imagine a life without her so he eats the apple as well. They both, then, satiate their new-born lust in the bushes and wake up ashamed, knowing now the difference from good and evil (and, therefore, being able to choose evil). They spend the afternoon blaming each other for their fall.
God sends the Son down to judge the two disobediant creatures. The Son condemns Eve, and all of womankind, to painful childbirths and submission to her husband. He condemns Adam to a life of a painful battle with nature and hard work at getting food from the ground. He condemns the serpent to always crawl on the ground on its belly, always at the heel of Eve's sons.
Satan, in the meantime, returns to hell victorious. On the way, he meets Sin and Death, who have built a bridge from hell to earth, to mankind, whom they will now reign over. When Satan arrives in hell, however, he finds his fallen compatriots not cheering as he had wished, but hissing. The reason behind the horrible hissing soon becomes clear: all of the fallen angels are being transformed into ugly monsters and terrible reptiles. Even Satan finds himself turning into a horrible snake.
Adam and Eve, after bitterly blaming each other, finally decide to turn to God and ask for forgiveness. God hears them and agrees with his Son that he will not lose mankind completely to Sin, Death and Satan. Instead, he will send his son as a man to earth to sacrifice himself and, in so doing, conquer the evil trinity.
Michael is sent by God to escort Adam and Eve out of the Garden. Before he does, however, he tells Adam what will become of mankind unitl the Son comes down to earth. The history of mankind (actually the history of the Jewish people as narrated in the Hebrew Bible) will be a series of falls from grace and acceptance back by God, from Noah and the Flood to the Babylonian exile of the Jewish people.
Adam is thankful that the Son will come down and right what he and Eve have done wrong. He holds Eve's hand as they are escorted out of the Garden.