Dante's Inferno, Canto 19

At the third ditch of the circle of fraud, we meet a former Pope, now positioned head-first into a hole in the ground, his feet and legs exposed, and kicking in pain because there are flames of fire playing back and forth on the soles of his feet. What has he done wrong? He used the sacred things of the Church to make money for himself. That's called simony, and he's called a simoniac.