The Speaker represents the Christian soul setting out on a painful pilgrimage through the darkness. Driven entirely by the fiery passion of his own heart, he abandons the safety of his physical surroundings to seek spiritual fulfillment. He assumes a vulnerable, supplicant position, eager to shed the anxieties of the mortal body.

Referred to in the allegory as a mysterious and powerful lover. He exists as an entity of sheer radiant energy who draws the searching soul toward Him. Though wielding immense power that paralyzes the physical senses, He interacts with the Speaker with absolute gentleness.

A 16th-century Carmelite monk and poet who dedicates his life to strict monasticism and church reform. He endures imprisonment and torture for his uncompromising beliefs, translating his physical and emotional agony into profound mystical poetry. His writings chart the soul's process of finding divine love.

An ascetic and passionate mystic within the Catholic Church. She recognizes John's devotion and recruits him to help her bring the Carmelite Order back to its strict, original practices. Her influence shapes John's early missionary work and sets him on the path of rigorous spiritual simplicity.