At the funeral of a friend, a shaken Prior relates his encounter with the Angel to Belize. After revealing the presence of a mystical book underneath the tile in Prior's kitchen, the Angel reveals to him that Heaven is a beautiful city that resembles San Francisco, and God, described as a great flaming Aleph, created the universe through copulation with His angels, who are all-knowing but unable to create or change on their own. God, bored with the angels, made mankind with the power to change and create. The progress of mankind on Earth caused Heaven to suffer earthquake-like tremors and physically deteriorate. Finally, on the day of the San Francisco earthquake in 1906, God abandoned Heaven. The Angel brings Prior a message for mankind—"stop moving!"—in the belief that if man ceases to progress, Heaven will be restored. Belize believes that Prior is projecting his own fears of abandonment into an elaborate hallucination, but Prior suspects that his illness is the prophecy taking physical form, and that the only way the Angel can force him to deliver her message is to die.