What does the Bible say about healing the blind?

In John 9:1-12, Jesus encounters a man who has been blind from birth. His disciples ask whether this affliction was due to sin, to which Jesus responds that the man was born blind so that God's works could be revealed through him. This miracle illustrates not only God's power to heal but also His purpose in bringing glory to Himself through our suffering. Jesus, by healing this man, shows His authority over creation and exemplifies the spiritual truth that He is the light of the world, bringing sight both physically and spiritually to the blind.