In Saul Bellow's novel "Henderson the Rain King," the phrase "The hour that burst the spirit's sleep" emphasizes a critical moment of awakening and self-discovery. This signifies a turning point where the protagonist, Henderson, confronts his internal struggles and seeks a deeper meaning in life. It reflects a transformative experience that propels him toward personal growth and understanding.

Throughout the narrative, Henderson's journey through Africa acts as a catalyst for his spiritual enlightenment. This moment encapsulates the idea that true enlightenment often arises from profound experiences, urging readers to reflect on their own lives and the moments that lead to personal epiphanies. Bellow's exploration of existential themes through Henderson’s character resonates with anyone who has faced moments of awakening.