Hell and how to avoid it are perennial topics of interest for believing Christians and others. With good reason. Entire libraries have been written on the subject. Most people, even those familiar with his classic, do not realize that Dante Aligheri's Divine Comedy, chock-full as it is of history and politics, is a masterpiece of spiritual writing. The most famous of his three volumes is the Inferno, an account of Dante's journey through the underworld,...