How do we know God can heal our spiritual blindness?

The narrative in Mark 9 showcases various instances where Jesus healed physical ailments, which parallel the spiritual needs of humanity. The healing of the blind, deaf, and dumb represents the power of Christ to open our eyes and ears spiritually. Romans 3:11 states that none seek after God, illustrating our spiritual blindness. Yet, through Christ, those who were once unable to hear or speak are given the ability to respond to the gospel. His miracles serve as signs of the greater reality of spiritual healing available to all who believe.