It's awfully difficult being Christian and not quoting CS Lewis. But here I go again:
"There are two equal and opposite errors into which our race can fall about the devils. One is to disbelieve in their existence. The other is to believe, and to feel an excessive and unhealthy interest in them."
The Screwtape Letters
Here Lewis alludes to humanity's mistake in either (i) ignoring Satan or (ii) being overly interested.
Do we often neglect John Calvin's words that, "...Satan has his miracles, too"?
What is the extent of Satan's power? How much control does he have in the world? Do we often ignore his existence? Are we overly interested in him?
Is Satan a real being?