In the revelations of St. Bridget, she writes that one day she heard a loud voice, coming from the prison of Purgatory, which said:

"What return and what recompense will be given to those who bring us relief in our affliction?"

Another voice, louder still, prayed:

"O my God and Savior, by Your infinite goodness, be pleased to reward a hundredfold all those among the living who come to our assistance, and who by their prayers raise us up sooner to You."

Then the saint heard the voice of an angel saying:

"Blessed are those in the world who have, by their prayers, their alms, and their good works, helped the holy souls of Purgatory."