"The practice of recommending to God the souls in Purgatory, that He might mitigate the great pains which they suffer, and that He may soon bring them to His glory, is most pleasing to the Lord and most profitable to us. For these blessed souls are His eternal spouses, and most grateful are they to those who obtain their deliverance from prison, or even a mitigation of their torments. When, therefore, they arrive in Heaven, they will be sure to remember all who have prayed for them. It is a pious belief that God manifests to them our prayers in their behalf, that they may also pray for us. It is true that these blessed souls are not in a state to pray for themselves, because they are atoning for their faults. However, because they are very dear to God, they can pray for us, and obtain for us the divine graces. Saint Catherine of Bologna, when she wished to obtain any grace, had recourse to the souls in Purgatory, and her prayers were heard immediately. She declared that, by praying to those holy souls, she obtained many favours which she had sought through the intercession of the saints without obtaining them. The graces which devout persons are said to have received through these holy souls are innumerable.
"But, if we wish for the aid of their prayers, it is just, it is even a duty, to relieve them by our suffrages. I say, it is even a duty: for Christian charity commands us to relieve our neighbors who stand in need of our assistance. But who among all our neighbors have so great need of our help as those holy prisoners? They are continually in that fire which torments more severely than any earthly fire. They are deprived of the sight of God, a torment far more excruciating than all other pains. Let us reflect that among these suffering souls are parents, or brothers, or relations and friends, who look to us for succour.
"Let us remember, moreover, that being in the condition of debtors for their sins, they cannot assist themselves. This thought should urge us forward to relieve them to the best of our ability. By assisting them we shall not only give great pleasure to God, but will acquire also great merit for ourselves. And, in return for our suffrages, these blessed souls will not neglect to obtain for us many graces from God, but particularly the grace of eternal life. I hold for certain that when a soul delivered from Purgatory by the suffrages of a Christian enters paradise, she will not fail to say to God: “Lord, do not suffer that person to be lost who has liberated me from the prison of Purgatory, and has brought me to the enjoyment of Thy glory sooner than I had deserved.”
~ St. Alphonsus Liguori ~