My children, you remember the story I have told you already of that holy priest who was praying for his friend; God had, it appears, made known to him that he was in Purgatory; it came into his mind that he could do nothing better than to offer the holy Sacrifice of the Mass for his soul. When he came to the moment of Consecration, he took the Host in his hands and said, "O Holy and Eternal Father, let us make an exchange. You have the soul of my friend who is in Purgatory, and I have the Body of Your Son, Who is in my hands; well, deliver my friend, and I will offer You Your Son, with all the merits of His Death and Passion." In fact, at the moment of the elevation, he saw the soul of his friend rising to Heaven, all radiant with glory. Well, my children, when we want to obtain anything from the good God, let us do the same; after Holy Communion, let us offer Him His well-beloved Son, with all the merits of His death and His Passion. He will not be able to refuse us anything.
~ St. Jean Vianney ~