Speaking about the Church's mission and human freedom, Pope John Paul II says in Redemptor Hominis:

Jesus Christ meets the man of every age, including our own, with the same words: “You will know the truth, and the truth will make you free.”

These words contain both a fundamental requirement and a warning: the requirement of an honest relationship with regard to truth as a condition for authentic freedom, and the warning to avoid every kind of illusory freedom, every superficial unilateral freedom, every freedom that fails to enter into the whole truth about man and the world. Today also, even after two thousand years, we see Christ as the one who brings man freedom based on truth, frees man from what curtail, diminishes and as it were breaks off this freedom at its root, in man's soul, his heart and his conscience. What a stupendous confirmation of this has been given and is still being given by those who, thanks to Christ and in Christ, have reached true freedom and have manifested it even in situations of external constraint. (12.3)

When Jesus himself appeared as a prisoner before Pilate's tribunal and was interrogated by him about the accusation made against him by the representatives of the Sanhedrin, did he not answer: “For this I was born, an for this I have come into the world, to bear witness to the truth?” It was as if with these words spoken before the judge at the decisive moment he was once more confirming what he had said earlier: “You will know the truth, and the truth will make you free.” In the course of so many centuries, of so many generations, form the time of the Apostles on, is it not often Jesus Christ himself that has made an appearance at the side of People judged for the sake of truth? Does he ever cease to be the continuous spokesman an advocate for the person who lives “in the spirit of truth?” Just as he does not cease to be it before the Father, he is it also with regard to the history of man. And in her turn the Church, in spite of all the weaknesses that are part of her human history, does not cease to follow him who said: “The hour is coming, and now is, when the true worshippers will worship the Father in spirit and truth, for such the Father seeks to worship him. God is spirit, and those who worship him must worship in spirit and truth.” (12.4)