Even when Jesus says of Judas, the traitor, “It would be better for that man if he had never been born,” (Mt. 26:24), His words do not allude for certain to eternal damnation.
This is the explicit teaching of Pope St. John Paul II from Crossing the Threshold of Hope. He is apparently at least sympathetic toward those of us who, like his friend von Balthasar, hold out hope for universal salvation. But he also acknowledges the tension, trying to justify that hope against certain passages of Scripture:
Can God, who has loved man so much, permit the man who rejects Him to be condemned to eternal torment? And yet, the words of Christ are unequivocal. In Matthew’s Gospel He speaks clearly of those who will go to eternal punishment (cf. Mt. 25:46). Who will these be? The Church has never made any pronouncement in this regard.
So it seems to me that we are both left with only hope and not certainty either way; those of us who hope that hell will be empty, and those of us who hold the conviction that hell will teeming with lost souls. In reality, both positions are just speculation. I prefer to hope for the salvation of all. As Pope St. John Paul II concludes:
Before all else, it is Love that judges. God, who is love, judges through love. It is Love that demands purification, before man can be made ready for that union with God which is his ultimate vocation and destiny. Perhaps this is enough. Many theologians, in the East and West, including contemporary theologians, have devoted their studies to the Last Things. The church still has its eschatological awareness. It still leans man to eternal life. If the church should cease to do so, it would cease being faithful to its vocation, to the New Covenant, which God has made with it in Jesus Christ.