Jesus said: “All authority in heaven and earth has been given to me” (Matthew 28:18). If Jesus has all authority then the devil has no authority over us… none, that is, unless we give it to him! The devil has been defeated but he has not yet been destroyed. It’s a bit like what happened at the end of WWII: On 6th June 1944, D-Day, Allied troops landed in northern France to begin the liberation of occupied Europe. The war was effectively won on D-Day and the enemy knew it. It was a re-invasion, and the German armies were forced to retreat until their final defeat almost a year later on VE-Day (Victory in Europe); the 8th May 1945. – Satan has already been defeated but he has not yet destroyed… that will happen when Jesus returns.