One gets the impression in teaching about the existence of the Devil as a real being is not particularly popular in our time.
Any number of authors in scripture and otherwise have noted that if the Devil can convince us he does not exist then the battle is already won-half of it
Therefore St. Paul admonished us to put on all the armor that God has forged, that you may able to make a stand against the Devil’s cunning tricks
Our wrestling is not against weak human nature but against the Principalities and the Powers
Against those that rule the World of Darkness
The Wicked spirits that belong to an order higher than ours
With all this take up the shield of faith with which you will be enabled to put out all the flaming arrows of the Wicked Enemy
The presence of the Devil is in the first page of the Bible
And the Bible ends with the presence of the Devil, with God’s victory over the Devil
Do not confuse the truth
Keep guard of our hearts because the Devil is cunning
He is never completely vanished
Only on the last day will he be