Thomas Aquinas

“ A person who lives near the church, and the priest and clergy of the church, gain the indulgence as much as those who come perhaps a distance of a thousand days' journey: because the remission, as stated above, is proportionate, not to the toil, but to the merits which are applied. Yet he who toils most gains most merit. ”

“ Hence we must say on the contrary that indulgences hold good both in the Church's court and in the judgment of God, for the remission of the punishment which remains after contrition, absolution, and confession, whether this punishment be enjoined or not. The reason why they so avail is the oneness of the mystical body in which many have performed works of satisfaction exceeding the requirements of their debts; in which, too, many have patiently borne unjust tribulations whereby a multitude of punishments would have been paid, had they been incurred. ”

“ The remission which is granted by means of indulgences does not destroy the proportion between punishment and sin, since someone has spontaneously taken upon himself the punishment due for another's guilt, as explained above. ”

“ Nor does a person gain the indulgence each time he visits the church during the term of indulgence, because sometimes it is granted for a fixed time; thus when it is said, "Whoever visits such and such a church until such and such a day, shall gain so much indulgence," we must understand that it can be gained only once. on the other hand if there be a continual indulgence in a certain church, as the indulgence of forty days to be gained in the church of the Blessed Peter, then a person gains the indulgence as often as he visits the church. ”

“ These merits, then, are the common property of the whole Church. Now those things which are the common property of a number are distributed to the various individuals according to the judgment of him who rules them all. Hence, just as one man would obtain the remission of his punishment if another were to satisfy for him, so would he too if another's satisfactions be applied to him by one who has the power to do so. ”

“ The key of orders is a sacramental: and as the effects of the sacraments are fixed, not by men but by God, the priest cannot decide in the tribunal of confession how much shall be remitted by means of the key of orders from the punishment due; it is God Who appoints the amount to be remitted. ”

“ So great is the quantity of such merits that it exceeds the entire debt of punishment due to those who are living at this moment: and this is especially due to the merits of Christ: for though He acts through the sacraments, yet His efficacy is nowise restricted to them, but infinitely surpasses their efficacy.
Now one man can satisfy for another, as we have explained above ( [4887] Q [13] , A [2] ) . ”

“ Wherefore whatever remission is granted in the court of the Church holds good in the court of God. Moreover the Church by granting such indulgences would do more harm than good, since, by remitting the punishment she had enjoined on a man, she would deliver him to be punished more severely in Purgatory. ”

“ Hence others have maintained that indulgences avail as much as is claimed for them, according to a just estimate, not of him who grants it---who perhaps puts too high a value on it---nor of the recipient---for he may prize too highly the gift he receives, but a just estimate according to the estimate of good men who consider the condition of the person affected, and the utility and needs of the Church, for the Church's needs are greater at one time than at another. ”

“ Further, the Apostle says (1 Cor. 15:14) : "If . . . our preaching is vain, your faith is also vain." Therefore whoever utters a falsehood in preaching, so far as he is concerned, makes faith void. and so sins mortally. ”