Sojourning Under the Sun: Exile (Genesis 3)

Adam is in the garden of Eden, called to honor the Lord, and love the Lord.  There is a tree that God placed in Eden which will confer upon him the knowledge of Good and Evil.  Is it wrong to eat of this tree just because the Lord says so?  Is the Lord holding something back from Adam that would be good for him?  How bad would it be for Adam to eat of the tree?  What would ultimately happen to the human race and this world?  This chapter in Genesis truly is a history changing moment.