My understanding of the Cross is that it broke the power of Satan, but still doesn't stop individuals from playing with him by, for example, blaming him for what they perceive to be problems with others. When accusing others of problems a mirror is often useful as the problem often lies with the accuser rather than the accused. As a non-believer, I fail to see why believers still play with Satan when they have the Cross. PS I hear that Satan wants to ban mirrors as they enable people to see their own faults which serve the defeated Satan.
