Here is the last part of A Short Catechism on Indulgences. Even if you are familiar with the subject it doesn’t hurt to remind yourself to accept the gifts the Holy Catholic Church offers.
7. Why does the Church grant indulgences? The Church grants indulgences for two reasons:
1. The Church wishes to save us from the suffering of purgatory and to hasten our entrance into heaven.
2. The Church wishes to encourage us to perform certain good works. As an added inducement to perform them, the Church grants us an indulgence. For example, to encourage us to make the Stations of the Cross, to recite the rosary in the presence of the Blessed Sacrament, to read the Bible with due veneration and as spiritual reading, to recite certain prayers, the Church has attached to these exercises various indulgences.
8. Does an indulgence forgive sins? No, it takes away the punishment due to sins already forgiven.
9. Is an indulgence a permission to commit sins? No. No one can grant permission to commit a sin.
10. What are the two principal kinds of indulgences? The two principal kinds of indulgences are the plenary (complete) and the partial indulgence. A plenary indulgence takes away all of the temporal punishment due to the sins of one person; a partial indulgence takes away part of the temporal punishment due to one’s sins.
11. What is an indulgence of “300 days”? The phrase “300 days” does not mean that the time in purgatory is shortened by 300 days. It means that the indulgence takes away as much temporal punishment as would have been taken away by 300 days of public penance in the early Church. An example will help to explain this point. In the early days of the Church if John Smith had sinned by injuring his neighbor or by stealing and then had gone to confession, he might have been given some difficult penance, e.g., kneeling during the entire Mass for 300 consecutive days. This public penance gained for him great merit and took away some of the temporal punishment due to his sins. But how much it took away neither he nor anyone else on earth knew. In granting an indulgence of 300 days the Church applies to an individual soul the same amount of merit that would have been gained by 300 days of difficult public penance. But no one on earth knows how much temporal punishment is taken away (or how much purgatory is shortened) by that indulgence.
12. What does the phrase “usual conditions” mean? In stating what must be done to gain a particular indulgence, it is sometimes said that the indulgence may be gained by doing the prescribed works and “under the usual conditions”. The conditions referred to are these four:
1. Going to confession.
2. Receiving Holy Communion.
3. Visiting a church or oratory.
4. Praying for the intention of the Pope.
13. What must one do to gain an indulgence? To gain an indulgence one must:
1. Be a baptized Catholic and not be excommunicated from the Church.
2. Be in the state of grace.
3. Have at least the general intention of gaining the indulgence.
4. Perform the work prescribed by the Church for gaining the indulgence (e.g., making the Stations, reading the Bible, etc.).
14. Can we gain indulgences for others? We cannot gain indulgences for other living persons. But we can gain indulgences for souls in purgatory, because the Church makes most indulgences applicable to them also.
15. How often can we gain indulgences? We can gain indulgences as often as we can fulfill the conditions required for gaining them. For example, the indulgence of 300 days attached to the recitation of the ejaculation “My Jesus, mercy” may be gained as often as that ejaculation is recited. Again, the indulgence of three years for reading the Bible as spiritual reading for fifteen minutes may be gained as often as the Bible is read for fifteen minutes. However, unless the opposite is expressly stated, a plenary indulgence for one particular good work (e.g., reciting the Rosary before the Blessed Sacrament) can be gained only once each day. But many plenary indulgences may be gained in one day if they are for different good works (e.g., one for making the Stations of the Cross, another for reciting the Rosary before the Blessed Sacrament).