Here's a vintage gem, a 1951 Jack Kirby and Joe Simon cover featuring what must be one of Kirby's earliest renditions of a demon. This seems safely ensconced inside the candle-surrounded circle, but of course we know that won't last.
In fact it reminded me of this classic Berni Wrightson cover from twenty years later. I can almost imagine this scene as what might've happened one minute after the earlier cover.
Here are some details from the Black Magic issue, one that Kirby only did the cover for.