Theology of Light and Darkness in the Gospel of John by William Henderson explores the profound theological motifs of light and darkness that permeate the Gospel of John. This work examines the symbolic and spiritual significance of light as a representation of divine truth, revelation, and salvation, while darkness embodies ignorance, sin, and separation from God. Henderson delves into the narrative structure of John's Gospel, tracing the journey of Jesus as the incarnate "Light of the World," from His earthly ministry and crucifixion to His resurrection and ascension. The book also highlights the spiritual implications for believers, emphasizing how the light of Christ not only reveals God's truth but also guides the faithful in their walk with God. Throughout the study, historical, cultural, and theological contexts are explored to deepen the understanding of how light and darkness function as both metaphors and central themes in John's narrative. The work is essential for those looking to understand the deeper layers of meaning in the Gospel of John and the role that light plays in the Christian journey of salvation.