Many Catholics and other Christians no longer believe the devil is a real, personal and spiritual being—a fallen angel. Which is all to Satan’s advantage.
Satan
The Devil Is A Prowling Lion
One cannot be biblically literate without also being introduced to the diabolical influences of Satan. However, people today often disbelieve in Satan and his cohorts, the other fallen angels who went agreeably along with his choice to forever reject God.
Satan and The Fallen Angels
What do we know about the devil? A great deal, actually. Satan is a personal, spiritual being whose power of intellect and strength of will far exceeds that of man. We might draw an analogy of this difference between the intellectual powers of a child and those of a full grown, highly educated adult; however, such an analogy falls exceedingly short of articulating the angelic/human gap with any accuracy.