How does Christ heal spiritual blindness?

The healing of spiritual blindness is illustrated in John 9 through the physical healing of the blind man. As Christ applied clay to his eyes and commanded him to wash in the Pool of Siloam, this act symbolizes Christ's work in regenerating the hearts of believers. The blind man's obedience to Christ's command demonstrates the necessity of faith in His Word. Christ alone makes the Gospel effective, means through which sinful hearts are awakened to grasp the reality of their condition and the sufficiency of Christ's redemptive work. This underscores the belief that it is through the Spirit's application of the Word that one is made willing to believe and receive life.