We perceive intimately that the truth revealed to us by God imposes on us an obligation. We have, in particular, a great sense of responsibility for this truth. By Christ’s institution the Church is its guardian and teacher, having been endowed with a unique assistance of the Holy Spirit in order to guard and teach it in its most exact integrity78. In fulfilling this mission, we look towards Christ himself, the first evangelizer, and also towards his Apostles, martyrs and confessors. The Declaration on Religious Freedom shows us convincingly that, when Christ and, after him, his Apostles proclaimed the truth that comes not from men but from God (“My teaching is not mine, but his who sent me”, that is the Father’s), they preserved, while acting with their full force of spirit, a deep esteem for man, for his intellect, his will, his conscience and his freedom. Thus the human person’s dignity itself becomes part of the content of that proclamation, being included not necessarily in words but by an attitude towards it. This attitude seems to fit the special needs of our times. Since man’s true freedom is not found in everything that the various systems and individuals see and propagate as freedom, the Church, because of her divine mission, becomes all the more the guardian of this freedom, which is the condition and basis for the human person’s true dignity.

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 curtails, 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! – from Redemptor Hominis (1979)