Your Adversary the Devil

Extract

The subject of the devil and his power to do evil to man is seldom discussed in the pulpit with all the exactness of sound theology. A missioner will descant on the mighty intelligence of Satan, and his relentless attack on the human race. He may even draw pictures of the dreadful state of a soul that has irrendered to the devil, and become completely possessed by him. He will warn his hearers that the devil is a powerful adversary, and that their strength is small and puny compared with Satan’s. In all this there is a good purpose, and the missioner’s words are often a very useful goad for the sluggish type of character that requires more vivid and more fiery (often in a literal sense) motives of action than the somewhat cold idea of duty to God. But there is a want of exactness and balance if no mention is made of the precise limits of Satan’s power over man, and there is the danger of causing unnecessary fear. One could wish that more attention were devoted to a careful explanation of the method of Satan’s attack, and of the limits of its efficacy.

A very important point to make, first of all, is that the devil can never act directly on the human intellect or the will. In other words, the devil has no means of getting inside a man’s soul and taking possession of man’s free-will. St. Thomas gives the following reason : to be within another is to be within his terms (terminos, limits),