John 9:27

He answered them, I have told you already, and ye did not hear: wherefore would ye hear it again? will ye also be his disciples?

The words are the answer of the man born blind when the Pharisees question him again about how Jesus opened his eyes and how he received his sight. He points out that he has already told them and they did not hear or listen, challenging them for asking again. He asks whether they too want to become Jesus' disciples, which challenges their repeated inquiry and exposes their opposition, hostile purpose, rejection of the evidence, and unwillingness to hear his testimony.

His answer is a bold, pointed rebuke, and Jesus gave him grace and words to stand as a witness for Christ. His question exposes their hardened prejudice, determined unbelief, jealousy, and spiritual blindness, contrasting his witness to the miracle with their hostility. They would not accept Christ because they were jealous of His popularity and hated Him because He would not receive their ideas, and instead of receiving enlightenment they chose to remain in darkness and made themselves even more spiritually blind, trying to close the healed man's eyes and to smother his testimony about a wonderful miracle proving Christ's mission.

As false shepherds they try to scatter the sheep while he stands as a witness to Christ, and as self-righteous men working in harmony with the adversary instead of God they despised his purchase and held him worthy only of contempt, sneers, and hatred. The verse belongs to the story of the poor blind man restored to sight by the compassionate Shepherd, who is anxious to save him as one purchased by the blood of Christ given to save an apostate and ruined race. The sympathy of all heaven is enlisted on behalf of such a wandering sheep far from the fold, and as Satan's delusions are broken the sinner looks to Calvary, contemplates the costly offering, is deeply moved by the love of God and becomes repentant, beholding Christ and being changed and transformed in character from glory to glory in the conflict between light and darkness.

The account shows Jesus' compassion reaching people who did not yet know Him, for the healed man did not know who had healed him until Jesus revealed Himself as the Son of God, and the man then worshiped Him.