Council of Trent: Session XIV, Penance, Chapter VI

CHAPTER VI. On the ministry of this Sacrament, and on Absolution.

But, as regards the minister of this sacrament, the holy Synod declares all these doctrines to be false, and utterly alien from the truth of the Gospel, which perniciously extend the ministry of the keys to any others soever besides bishops and priests; imagining, contrary to the institution of this sacrament, that those words of our Lord, Whatsoever you shall bind upon earth, shall be bound also in heaven, and whatsoever you shall loose upon earth shall be loosed also in heaven, and, Whose sins you shall forgive, they are forgiven the m, and whose sins you shall retain, they are retained,were in such wise addressed to all the faithful of Christ indifferently and indiscriminately, as that every one has the power of forgiving sins,-public sins to wit by rebuke, provided he that is rebuked shall acquiesce, and secret sins by a voluntary confession made to any individual whatsoever. It also teaches, that even priests, who are in mortal sin, exercise, through the virtue of the Holy Ghost which was bestowed in ordination, the office of forgiving sins, as the ministers of Christ; and that their sentiment is erroneous who contend that this power exists not in bad priests. But although the absolution of the priest is the dispensation of another's bounty, yet is it not a bare ministry only, whether of announcing the Gospel, or of declaring that sins are forgiven, but is after the manner of a judicial act, whereby sentence is pronounced by the priest as by a judge: and therefore the penitent ought not so to confide in his own personal faith, as to think that,--even though there be no contrition on his part, or no intention on the part of the priest of acting seriously and absolving truly,--he is nevertheless truly and in God's sight absolved, on account of his faith alone. For neither would faith without penance bestow any remission of sins; nor would he be otherwise than most careless of his own salvation, who, knowing that a priest but absolved him in jest, should not care fully seek for another who would act in earnest.

Translation: J. Waterworth, The Canons and Decrees of the Council of Trent (1848), Hanover Historical Texts Project transcription (1995).