Some years ago, occasioned by a civil case in Louisiana, I took up some issues related to the seal of confession. I want to return to the question again, which has been raised by proposed legislature in several countries to oblige priests to report suspected sexual abuse of minors, even if it comes to their knowledge only in the context of confession.
Recently, June 29, 2019, the apostolic penitentiary published a note on the sacramental seal and the internal forum, and some comments thereupon in the presentation of that note. Before looking at this note in detail, I want to here translate a speech of Pope St. John Paul II To the members of the Apostolic Penitentiary and the confessors of the Patriarchal Basilicas of Rome (March 12, 1994), cited in the aforementioned note. Originally given in Italian, it is available on the Vatican website only in Italian and Portugese.
I thank the Lord, who also this year offers me the joy of your presence: of you, Cardinal Major Penitentiary, whom I thank for the sentiments expressed in the address to me; of you, Prelates and Officials of the Penitentiary, Ordinary and Extraordinary Penitentiary Fathers of the Patriarchal Basilicas of the City. I am also pleased to welcome you, young priests or future ordinands to the presbyterate, who in desire anticipate your sacred ministry, and therefore, in relation to one of the highest and most delicate aspects of it, you have specifically wished to prepare by taking advantage of the course on internal forum, which each year the Apostolic Penitentiary organizes and carries out.
This joy derives, first of all, from the observation of your sincere devotion to the Chair of Peter, whose "potior principalitas" Cardinal Baum recalled referring to the venerable testimony of Irenaeus. It is a joy that then springs from the opportunity that our meeting offers me to return to issues pertaining to the sacrament of Penance, always of vital importance for the Church and today of special relevance.
2. As I turn in gratitude to the Members of the Penitentiary and to the Penitentiary Fathers, because they dedicate the best of their energies to the pastoral care of Reconciliation, I stress that the existence of a Dicastery with this specific task, and the full-time assignment of many Priests, belonging to illustrious religious families, to this ministry in the main basilicas of Rome indicate the privileged place that the Holy See attributes to this sacramental function.
I would like to direct that thanks to the individual Penitentiary Fathers as well as to their religious families, because they are well aware of this need and of the singular good fruit that follows, in harmonious cooperation with the Apostolic Penitentiary and on the basis of of secular dispositions issued by the Supreme Pontiffs, generously provide, at the cost of sacrifice, suitable subjects, and with noble spirit subordinate certain peculiarities of their customs to the pre-eminent task assigned by the Holy See.
3. I would further like to highlight your origin from the various continents. This circumstance corresponds to the Pope's intention to send all the confessors of the world his meditation, his recommendation, his hope regarding the ministry of Reconciliation. It must be protected in its sacredness, as well as for theological, juridical, psychological reasons, about which I have spoken in the previous similar allocutions, and out of the loving respect due its character of intimate relationship between the faithful and God. It is God indeed whom sin offends and it is God who forgives sin, who scrutinizes "what is in man", that is, personal conscience, and deigns to associate in this healing and sanctifying conversation the human priest, elevating him to the ineffable prerogative of acting “in the person of Christ.”
Our Lord Jesus Christ, having established that the faithful accuse his sins to the minister of the Church, thereby sanctioned the absolute incommunicability of the contents of the confession with respect to any other man, to any other earthly authority, in any situation. The canonical discipline in force regulates this right/duty, founded on the divine institution, with canons 728 § 1, n. 1, and 1456 § 1 of the Code of Canons of the Eastern Churches for the Churches of that Rite and, for the Church of Latin Rite, with canons 983 and 1388 of the Code of Canon Law. And it is very significant that the new Code, despite having mitigated the sanctions against the transgressors in almost all the other spheres of penal law, in this matter instead maintained the maximum penalties.
4. The priest who receives sacramental confessions is forbidden, without exception, to reveal the identity of the penitent and his sins; and precisely, with regard to serious sins, the Priest cannot mention them even in the most general terms; as far as venial sins are concerned, he cannot absolutely reveal the species, let alone the individual act.
It is not enough, however, to respect the silence as regards the identification of the person and his sins: it is necessary to respect it also by avoiding any manifestation of facts and circumstances, the remembering of which, although they are not sins, can displease the penitent, especially if mentioning them entails a disadvantage: in this regard, see the Decree of the Holy Office (Denz, 2195) which categorically condemns not only the violation of the seal, but also the use of the knowledge acquired in confession, when this involves in any case the "gravamen paenitentis". This absolute secret regarding sins and the dutiful strict caution for the other factors mentioned here bind the priest not only by prohibiting a hypothetical revelation to third persons, but also by forbidding hinting at the contents of the confession to the same penitent outside the sacrament, without his explicit consent, and especially if it is not sought.
5. This total confidentiality is directly for the benefit of the penitent. Consequently, there is for him neither sin nor canonical punishment, if he voluntarily and without causing harm to third parties reveals what he has accused himself of in confession. But it is evident that, at least by reason of a pact implicit in things, out of a duty of fairness, and, I would say, out of a sense of nobility towards the confessor, he ought in turn to respect silence regarding what the confessor, trusting in his discretion, manifested to him within the sacramental confession.
In this regard, it is my duty to recall and confirm what, by Decree of the Congregation for the Doctrine of the Faith (cf. AAS 80  1367), was established to repress and prevent injury to the sacredness of confession, perpetrated through the social media. [Note: the decree establishes the penalty of excommunication latae sententiae for those who by technical means record what is said by penitent or confessor in confession, or who publish it in the media.]
I must also deplore some unseemly and harmful episodes of indiscretion which, in this matter, have recently occurred to the bewilderment and pain of the faithful: "Ne transeant in exemplum!".
6. Consider here that their levity and imprudence of priests in this field, even if they do not reach the extremes foreseen by the penal law, produce scandal, discourage the faithful from approaching the sacrament of Penance, obscure a glory of two millennia that has also had its martyrs: I think above all on St. John of Nepomuk.
Consider the faithful who approach the sacrament of Penance, who, calling into question the confessor Priest, attack a man without defense: the divine institution and the law of the Church oblige him in fact to total silence "usque ad sanguinis effusionem".
I trust that none of those present will, thanks be to God, be reproached; but the warning is valid for all, and we must all with earnest prayer implore the heroism of an unstained fidelity to the sacred silence.
In order not to end on this negative note, I would like to add the positive things you see, especially the great influx of penitents who confess in Rome and elsewhere, especially in the Sanctuaries. There is a rebirth of the Sacrament, especially among young people, as noted in the World Youth Days, especially in Denver.
If penitents are not lacking, confessors are not lacking either. If once it could have been feared that the Sacrament of Reconciliation was about to be forgotten, today we are witnessing a rebirth of it.
This means that the Holy Spirit is always present and works through us, works above us, finds its paths and we must receive the fruits of its work.
This is why I am delighted. I would like our meeting today to also be a meeting of joy, a pre-Easter meeting, with the Easter vows that are always a great joy for the Resurrection.
The Resurrection is always present in the Sacrament of Penance and many rise again, even great sinners. It is thanks to many movements that have raised awareness of the importance of the Sacrament of Penance and forgiveness even among criminals or the Red Brigades. I talked to these people.
We must always return to the sacred memory of the great confessors of the Church such as St. John of Nepomuk, the Curé of Ars, Jean-Marie Vianney, and as Padre Pio was in our times. Also in Rome one knows many great confessors of the past and present among the various priests of the religious Congregations. There are true martyrs of the confessional in various Roman churches such as St. Peter's Basilica.
I entrust these exhortations and desires to the mercy of Jesus, the Eternal High Priest and to the prayers of Mary Most Holy, Mother of the Church and Refuge of sinners, while, as a pledge of constant affection, I impart my blessing to you all.