John 9:39

For judgment I am come into this world. Christ said (chap. iii. 17.) that God did not send his Son to judge the world: the same he repeats; (John xii. 47.) nor is this contradictory to those words: the meaning here is not that he is come to exercise the office of a judge, but he tells them what will be the consequences of his coming, and their refusing to believe in him, that they shall be justly punished with the greatest severity for their wilful blindness. (Witham) --- Jesus Christ came into the world that the pagans, who were yet in darkness, might receive light, and that the Jews, who enjoyed the light, might fall into darkness. The Jews were thus condemned, on account of their presumption and hardness of heart, and grace was granted to the Gentiles to enter into the true Church. These are the designs of the Almighty upon mankind, some of whom remain in infidelity, whilst others receive the light of faith; but all is done by the secret and impenetrable decrees of the justice and wisdom of God. The Holy Ghost, by these words, tells us only what was to be the event, not what was the cause of these things. We must seek for the cause of them in the malice of the heart of man, and in the depth of the judgments of God. (Calmet) --- I am come, &c. Not that Christ came for that end, that any one should be made blind; but that the Jews, by the abuse of his coming, and by their not receiving him, brought upon themselves this judgment of blindness. (Challoner)