5 But by the help of God, in order that We may crown this joy, We desire to fulfil, as far as lays in Our power, Our apostolic duty of charity by extending the plenitude of Our infinite spiritual treasures to those beloved children of the Church who, having died the death of the just, have quitted this world of strife with the sign of faith, and are branches of the mystical vine, though they cannot enter into everlasting rest until they have paid the uttermost farthing which they owe to the avenging justice of God.
Source: Quod Anniversarius (Vatican.va)