Many years ago, I read St. Teresa of Avila's classic Interior Castle. I am starting to read all her collected works. In the Introduction of the volume, I read: As for devils, she could say with complete freedom "I pay no more attention to them than to flies" and that the key element of her teaching about the devil is the utter uselessness of all fears concerning him. She also said, "I don't understand these fears, 'The devil! The devil!' when we can say 'God! God!' and make the devil tremble." It is gratifying to learn that she confirms what I have posted. That is, as long as we occupy ourselves with (or hide in) God, we may safely ignore the Devil.