Crusoe might have been spiritually sick, but it's not until he becomes physically ill that he decides to save his soul. In the grips of the flu (or "Ague" as Crusoe calls in on page 75), Crusoe has a fever dream in which a man comes down from the heavens and admonishes him for not yet repenting, and tries to kill him with a spear. He begins to see that his past behaviors have been sinful and his present miseries are punishments for his rebellious behavior. He finally repents and utters his first prayer. This is the beginning of Crusoe's spiritual life.