Isaiah 14,12 1 John 3,8 Revelation 12,9 Revelation 20,2
Satan exists! His tactics have not changed. His biggest ploy is to "convice" us that he does not exist; if he does not exist then hell does not exist; no hell then no Heaven and finally, no Heaven-no God. Thus rationalization has become the norm, where people believe if it feels good it is good, and my truth is my truth, your truth is your truth. I can not believe how many people believe this, hippy-60's nonsense.
The Strategy of the Devil in Demonic Temptations by Fr. John A. Hardon, S.J. As St. John tells us,
we are tempted from three sources: by the world, the flesh, and the devil. The world is the attractive sinful conduct of other people. The flesh is our concupiscence, the natural inclination that we now have after the fall of the human race, to follow what appeals to us even though it is displeasing to God. The devil is, in some ways, the most powerful enemy we have in the spiritual life. It was divinely providential that Christ allowed Himself to be tempted by the devil at the beginning of His public ministry. He is teaching us one of the most important lessons we need to learn in life. If He the living God in human form was tempted by the evil spirit then so are we. In order to imitate Christ, we must resist the devil as Christ, Himself, resisted the devil.