Chapter three of Genesis says that Adam and Eve had everything they needed in the garden. There was only one thing that God told them that they should "not" do: eat from the Tree of Knowledge; only from the Tree of Life. A serpent said them that God does not want you both to be as intelligent as he is so this forced Eve to disobey God's orders . And they ate the Forbidden fruit. So they were forced to leave Eden. Not only that but God said that women will have pain in childbirth, and that men need to work hard to grow food, and would return at death to the soil from where he once came. 