The story of Adam and Eve is famous all over the world. God created Adam in his own image and as he was lonely gave him a partner. He created Eve from his rib and both lived in idyllic surroundings. Adam and Eve to live life happily, but they broke a cardinal promise of God. They as per popular mythology ate the fruit of the tree of knowledge of good and evil. The result was that God banished them from heaven and they came down to earth. The man to earn his bread by toiling and the woman to bear children and attended suffering.
This tale is simple and popular. By the reason that God expelled Adam and eve could be something else. I will her venture a conjecture. If one reads genesis2:9 it reveals a little bit of something else. It says “And he said: Behold Adam is become as one of us, knowing good and evil: now, therefore, lest perhaps he put forth his hand, and take also of the tree of life, and eat, and live forever. And the Lord God sent him out of the paradise of pleasure, to till the earth from which he was taken”
An interpretation of the above is that Adam and Eve were expelled from Eden not because they ate the forbidden fruit of the tree of knowledge of good and evil, but in order to prevent them from eating from the tree of life - both forbidden trees as in Genesis 2:9 - which would have made them eternal and Gods.
The crucial point is that God feared that Adam and Eve would eat from the Tree of life and thus become an immortal.