John 9:20

First, They fully attest that which they could safely say in this matter; safely, that is, upon their own knowledge, and safely, that is, without running themselves into a premunire (v. 20): We know that this is our son (for they were daily conversant with him, and had such a natural affection to him as the true mother had, 1 Kings 3 26, which made them know it was their own); and we know that he was born blind. They had reason to know it, inasmuch as it had cost them many a sad thought, and many a careful troublesome hour, about him. How often had they looked upon him with grief, and lamented their child's blindness more than all the burdens and inconveniences of their poverty, and wished he had never been born, rather than be born to such an uncomfortable life! Those who are ashamed of their children, or any of their relations, because of their bodily infirmities, may take a reproof from these parents, who freely owned, This is our son, though he was born blind, and lived upon alms.

Verses 18-23 The Pharisees vainly hoped to disprove this notable miracle. They expected a Messiah, but could not bear to think that this Jesus should be he, because his precepts were all contrary to their traditions, and because they expected a Messiah in outward pomp and splendour. The fear of man brings a snare, ( Proverbs 29:25 ) , and often makes people deny and disown Christ and his truths and ways, and act against their consciences. The unlearned and poor, who are simple-hearted, readily draw proper inferences from the evidences of the light of the gospel; but those whose desires are another way, though ever learning, never come to the knowledge of the truth.