How, and to what extent this is done, we know not, but may draw our conclusion from similar instances- "In like manner," says St. Gregory the Great, "as the fallen angels, although pure spirits, are tormented by the material fire of hell, so may a similar fire torture the souls of the departed in Purgatory." The justice of God can punish a spirit by means of a material substance, as well as He can, in His omnipotence, give life to a body by the means of a spirit. According to the holy Fathers, the fire of Purgatory does not differ from the fire of hell, excepting in point of duration. "It is the same fire," says St. Thomas, "that torments the reprobate in hell, and the just in Purgatory, the least pain in Purgatory," he adds, "surpasses the greatest sufferings of this life." Nothing but eternal duration makes the fire of hell more terrible than that of Purgatory.
Prayer: Refresh, O Lord, the suffering souls in Purgatory with the dew of Thy grace, that their pains may be relieved, and, in Thy mercy, hasten the moment of their deliverance, that they may meet Thee in heaven, where no fire but that of Thy holy love shall consume them. Through Christ, our Lord. Amen.
Special Intercession: Pray for all the souls in Purgatory, particularly for those who are forgotten by their relatives.
Eternal rest, grant unto them, O Lord, and let perpetual light shine upon them; may they rest in peace. Amen (Three times)
Practice: Endeavor to spread the devotion to the holy souls as much as possible.
Invocation: My Jesus, mercy!