In Genesis 3, we see the serpent approaching Adam and Eve with a suggestion - a suggestion that perhaps God had been withholding "the good life" from them.  They considered and the question took root in their hearts.  They strike out on their own and grasp for MORE apart from Him.  Immediately blame, shame and suspicion entered the picture and they hid from God and each other.  In the Theology of the Body by Pope John Paul II this event is described in this way: "Before the fall, there was no threat to the dignity of the person.  They desired nothing but to love as God loves.  After the fall, they covered themselves as a protection from lust."  Their choice to grasp for the good life apart from God delivered them into a realm where instead of experiencing a life of giving and receiving love, it was possible to become the vicim or perpetrator of use and abuse.  Lust had entered into our human experience.