What does the Bible say about being blind from birth?

In John 9, Jesus encounters a man who was born blind. When asked by His disciples whether the man's blindness was due to his own sin or that of his parents, Jesus explains that neither is the case; rather, the blindness exists so that the works of God might be displayed in him. This narrative highlights not only the physical healing that Jesus performed but also serves as a profound metaphor for spiritual blindness that all humanity experiences without divine intervention. The miracle was meant to reveal Christ's power as the light of the world.