Our Saviour must not be understood here, as either asserting the blind man or his parents free from sin, and a degree of sin deserving such a punishment; but as speaking to his disciples question strictly, and answering, that this affliction came not upon him, either for any personal sin of his own, (for he could not be guilty of any actual sin before he was born), nor yet for any sin that his parents had committed: but that the works of God might be made glorious in him; both his work of power in afflicting, and his work of mercy in healing him.
Related Commentaries of John 9:3
John 9:3
3 Jesus answered,Neither hath this man sinned, nor his parents: but that the works of God should be made manifest in him.