St. Gertrude and the Holy Souls in Purgatory

Our Lord wishes people to pray for the souls in purgatory. He once showed Gertrude a table of gold on which were many costly pearls. The pearls were prayers for the holy souls. At the same time the saint had a vision of souls freed from suffering and ascending in the form of bright sparks to heaven.
In one Vision, Our Lord tells Gertrude that he longs for someone to ask Him to release souls from purgatory, just as a king who imprisons a friend for justice's sake hopes that someone will beg for mercy for his friend. Jesus ends with:

"I accept with highest pleasure what is offered to Me for the poor souls, for I long inexpressibly to have near Me those for whom I paid so great a price. By the prayers of thy loving soul, I am induced to free a prisoner from purgatory as often as thou dost move thy tongue to utter a word of prayer."

In another vision she was given the Prayer which Our Lord told her would release 1000 Souls from Purgatory every time it is said with love and devotion. "Eternal Father, I offer You the Most Precious Blood of Thy Divine Son, Jesus Christ, in union with the Masses said throughout the world today, for all the Holy Souls in Purgatory, for sinners everywhere, those in the Universal Church, in my home, and in my family."