O merciful Lord, we offer Thee the precious blood of the spotless Lamb, in behalf of the suffering souls in purgatory, whose sole desire is to see and glorify Thee in heaven. Open to them, O Lord, the infinite treasures of Thy merits; apply to them the fruits of Thy Passion and death, and through the adorable sacrifice of the Mass, release them from the debt due to Thy sovereign justice. Amen.