Dominum et Vivificantem §45

⁴⁵ The Spirit of truth, who "convinces the world concerning sin," comes into contact with that laborious effort on the part of the human conscience which the Conciliar texts speak of so graphically. This laborious effort of conscience also determines the paths of human conversion: turning one's back on sin, in order to restore truth and love in man's very heart. We know that recognizing evil in ourselves sometimes demands a great effort. We know that conscience not only commands and forbids but also Judges in the light of interior dictates and prohibitions. It is also the source of remorse: man suffers interiorly because f the evil he has committed. Is not this suffering, as it were, a distant echo of that "repentance at having created man" which in anthropomorphic language the Sacred Book attributes to God? Is it not an echo of that "reprobation" which is interiorized in the "heart" of the Trinity and by virtue of the eternal love is translated into the suffering of the Cross, into Christ's obedience unto death? When the Spirit of truth permits the human conscience to share in that suffering, the suffering of the conscience becomes particularly profound, but also particularly salvific. Then, by means of an act of perfect contrition, the authentic conversion of the heart is accomplished: this is the evangelical "metanoia." The laborious effort of the human heart, the laborious effort of the conscience in which this "metanoia," or conversion, takes place, is a reflection of that process whereby reprobation is transformed into salvific love, a love which is capable of suffering. The hidden giver of this saving power is the Holy Spirit: he whom the Church calls "the light of consciences" penetrates and fills "the depths of the human heart." Through just such a conversion in the Holy Spirit a person becomes open to forgiveness, to the remission of sins. And in all this wonderful dynamism of conversion-forgiveness there is confirmed the truth of what St. Augustine writes concerning the mystery of man, when he comments on the words of the Psalm: "The abyss calls to the abyss." Precisely with regard to these "unfathomable depths" of man, of the human conscience, the mission of the Son and the Holy Spirit is accomplished. The Holy Spirit "comes" by virtue of Christ's "departure" in the Paschal Mystery: he comes in each concrete case of conversion- forgiveness, by virtue of the sacrifice of the Cross. For in this sacrifice "the blood of Christ...purifies your conscience from dead works to serve the living God." Thus there are continuously fulfilled the words about the Holy Spirit as "another Counselor," the words spoken in the Upper Room to the Apostles and indirectly spoken to everyone: "You know him, for he dwells with you and will be in you."