How do we know Jesus healed the blind man?

The account of Jesus healing the blind man is one of the evidences of Christ's divine authority and power. In John 9:13-25, the formerly blind man openly acknowledges the miraculous change that occurred in his life. He cannot explain how the healing happened or debate theological implications; he simply confirms his experience stating, 'One thing I know, that whereas I was blind, now I see.' This personal testimony highlights the transformative effect of Christ’s work. This narrative illustrates a key element of sovereign grace theology: true faith often arises from personal experience of God's grace in one's life, rather than mere intellectual assent (John 9:25).