Catholics believe that we are in some way connected to the suffering souls of purgatory and that our prayers and intercession can help shorten their time of purification.
The Raccolta provides a short prayer invoking the mercy of Christ upon the cross, picturing his blood and water flowing upon the souls in purgatory.
We offer to thee, Eternal Divine Father, Father of mercies, for those souls so dear to thee that are now in Purgatory, the most Precious Blood and the water which flowed from the opened side of Jesus, thy Son, our Savior, and the grief of Mary, his most loving Mother, present on Calvary when he was so cruelly wounded.