It is an interesting secret, which emerges from the careful study of Catholic doctrine, as it has been articulated through the centuries. If we want to understand the Devil, that is the first place to look. The Church is the expert on demonic activity, having been in active competition with the infernal powers all this time. She is kept on her toes as their principal target. Until recently, she spoke with one clear voice, the words of Our Saviour, and indeed, were it not for divine assistance she would have succumbed to the satanic service, long long ago.