Gregory A. Boyd 
Satan and the Problem of Evil [PDF ebook] 

Where does evil come from?If there is a sovereign creator God, as Christian faith holds, is this God ultimately responsible for evil? Does God’s sovereignty mean that God causes each instance of sin and suffering? How do Satan, his demons and hell fit into God’s providential oversight of all creation and history? How does God interact with human intention and action? If people act freely, does God know in particular every human decision before the choice is made? God at War Satan and the Problem of Evil