Jhn 9:17-21, 17 They said to the blind man again, “What do you say about Him because He opened your eyes?” He said, “He is a prophet.” 18 But the Jews did not believe concerning him, that he had been blind and received his sight, until they called the parents … 20 His parents answered them and said, “We know that this is our son, and that he was born blind; 21 but by what means he now sees we do not know, or who opened his eyes we do not know. He is of age; ask him. He will speak for himself.”
Those in denial will attempt to discredit the truth and convince themselves otherwise. The blind man’s condition was witnessed by all, and he confirmed his identity and the one who healed him. Despite knowing this, the doubters remained unconvinced due to denial. They questioned him and involved his parents, hoping to change his story. But their unbelief only strengthened his faith and perception. He initially saw the healer as a Man, but now recognizes Him as a prophet from God.
There is a difference between a prudent caution and prejudiced infidelity. Men that seek occasion to quarrel with the clearest truths may find it if they please. No one coming into contact with Christ will remain the same, they will either be enlightened or blinded. Our guilt is proportioned to our refusal of the light.