Aha! I knew it!
From Wikipedia: "'The devil is in the details' is an idiom alluding to a catch or mysterious element hidden in the details; it indicates that "something may seem simple, but in fact the details are complicated and likely to cause problems". It comes from the earlier phrase "God is in the details", expressing the idea that whatever one does should be done thoroughly; that is, details are important." https://en.wikipedia.org/wiki/The_devil_is_in_the_details
The concept of satan is an interesting story. Regardless of your view about religion, the concept of satan and his origin caused by his revolt against God represents everything we want to avoid.
Behind the Scenes
I wanted to do this shot as a practical effect and not use Photoshop. I resolved the magnification clarity by creating a document with an enlarged center that I showed through the magnifying lens. And it worked!
Take a moment. Look at something, anything around you - what do you see? What do you notice? That's right - our eyes take in the big picture, but then move in closer to see the Details. That's just how we humans work - we instinctively want to look at things and then parts of those things. This week, let's work on making the details the main point of your shot. The wrinkles, special features and texture of our faces in portrait. Capturing fine, rarely seen details in a macro shot - maybe abstract, or in Nature. Maybe it's that gargoyle on the building you pass every day, but rarely take a moment to notice. It's up to you to craft an image that shows off the details of your choice of subject. Focus, contrast and composition will play a key role this week, so it's both a creative and technical challenge to accomplish. By capturing an image and looking for the picture within a picture, you'll be able to capture exquisite details that you'd probably normally overlook. When you start noticing the details, a world of new and possible images opens up to you.