Dante's experience at the Gate of Hell
1. Law of Divine Retribution: every sin has a punishment; contrapasso
2. Dante saw the opportunists, souls who are neither good nor bad, refused to take a stand, chased a banner, chased by insects
3. Dante brought to River Acheron with Charon, who refuses them for Dante is alive and has hope for salvation
4. Dante sees Pope Celestine, who rejected his role as a pope/abdicated/coward, taken by Boniface VIII (Benedetto) by gaslighting