It may seem strange that the doctrine of indulgences should have proved such a stumbling-block, and excited so much prejudice and opposition. But the explanation of this may be found in the abuses which unhappily have been associated with what is in itself a salutary practice. In this respect of course indulgences are not exceptional: no institution, however holy, has entirely escaped abuse through the malice or unworthiness of man. Even the Eucharist, as St. Paul declares, means an eating and drinking of judgment to the recipient who discerns not the body of the Lord. (1 Corinthians 11:27-29). And, as God’s forbearance is constantly abused by those who relapse into sin, it is not surprising that the offer of pardon in the form of an indulgence should have led to evil practices. These again have been in a special way the object of attack because, doubtless, of their connection with Luther’s revolt (see LUTHER). On the other hand, it should not be forgotten that the Church, while holding fast to the principle and intrinsic value of indulgences, has repeatedly condemned their misuse: in fact, it is often from the severity of her condemnation that we learn how grave the abuses were.
Even in the age of the martyrs, as stated above there were practices which St. Cyprian was obliged to reprehend, yet he did not forbid the martyrs to give the libelli. In later times abuses were met by repressive measures on the part of the Church. Thus the Council of Clovesho in England (747) condemns those who imagine that they might atone for their crimes by substituting, in place of their own, the austerities of mercenary penitents. Against the excessive indulgences granted by some prelates, the Fourth Council of the Lateran (1215) decreed that at the dedication of a church the indulgence should not be for more than year, and, for the anniversary of the dedication or any other case, it should not exceed forty days, this being the limit observed by the pope himself on such occasions. The same restriction was enacted by the Council of Ravenna in 1317. In answer to the complaint of the Dominicans and Franciscans, that certain prelates had put their own construction on the indulgences granted to these Orders, Clement IV in 1268 forbade any such interpretation, declaring that, when it was needed, it would be given by the Holy See. In 1330 the brothers of the hospital of Haut-Pas falsely asserted that the grants made in their favor were more extensive than what the documents allowed: John XXII had all these brothers in France seized and imprisoned. Boniface IX, writing to the Bishop of Ferrara in 1392, condemns the practice of certain religious who falsely claimed that they were authorized by the pope to forgive all sorts of sins, and exacted money from the simple-minded among the faithful by promising them perpetual happiness in this world and eternal glory in the next. When Henry, Archbishop of Canterbury, attempted in 1420 to give a plenary indulgence in the form of the Roman Jubilee, he was severely reprimanded by Martin V, who characterized his action as “unheard-of presumption and sacrilegious audacity”. In 1450 Cardinal Nicholas of Cusa, Apostolic Legate to Germany, found some preachers asserting that indulgences released from the guilt of sin as well as from the punishment. This error, due to a misunderstanding of the words “a culpa et a poena”, the cardinal condemned at the Council of Magdeburg. Finally, Sixtus IV in 1478, lest the idea of gaining indulgences should prove an incentive to sin, reserved for the judgment of the Holy See a large number of cases in which faculties had formerly been granted to confessors (Extrav. Com., tit. de poen. et remiss.).