Stan (the Man) Lee felt a good story...
...such as this one from Atlas' Amazing Adult Fantasy #7 (1961), was worth repeating...
Scripted by Lee and illustrated by his Spider-Man and Dr Strange co-creator Steve Ditko, the tale was typical of the "gotcha" snap-ending stories made popular in mass culture by Rod Serling on The Twilight Zone, but done, in comics, a decade earlier in the EC Comics horror and sci-fi/fantasy books (though usually with more gore).
Lee re-used (and expanded) the plot almost a decade later when he re-did it with another Silver Age legend, as you'll see tomorrow...