The most holy Author says,
«The great mercy of God shines even more luminously infinite in the words of Paul, who inspired proclaims that only those who do not acknowledge any law - neither natural, nor supernatural, nor reasoning - will perish, whereas those who have known the Law and who have not practiced it, from the same Law which saves, will be condemned; and more: that the Gentiles who do not have the Law but naturally and rationally do that which the unknown Law prescribes to them - by giving to themselves, only through the light of reason, righteousness of heart and obedience to the voices of the Spirit, unknown but present, the sole master of their spirit of good will, obedience to those inspirations which they follow because their virtue loves them and do not know that they are unknowingly serving God - these Gentiles, who show with their actions that the Law is written in their virtuous hearts, will be justified on Judgement Day.
Let us observe these three great categories of divine justice in which perfect mercy and justice shine.
Those who do not acknowledge any law, neither natural nor human and therefore rational, nor superhuman. Who are they? The savages? No. They are the lucifers of the Earth. And their numbers grow always more with the passing of time, notwithstanding civilization and the diffusion of the Gospel, an inexhaustible preaching of it, should make their numbers always more scanty. However, peace, justice and light are promised to men of good will. And these are of an evil will.
They are the rebels of every law, even of the natural law. Therefore, they are inferior to brutes. They voluntarily deny their nature of man: that of being endowed with a reasoning mind and soul. They commit things against nature and against reason. They no longer merit but to perish amongst the number of men who are created in the image and likeness of God, and they will perish as men in order to take on their desired nature as demons.
Second category: the hypocrites, the false, those who mock God by having the Law, by having it only and not practicing it. And can one then say that they truly have it and draw benefits from it? Similar to those who possess a treasure but who leave it idle and unattended, they do not draw fruits of eternal life and immediate joys at their death, and God will condemn them because they had the gift of God and they did not use it with gratefulness to the Donator who had placed them in the elect part of Humanity: in that of His People because it is marked by the Christian sign.
Third category: the Gentiles. Let us give this status to those of the present day who are not Christian Catholics. Let us call them so, while we meditate on the words of Paul. They, who not having the Law, do naturally what the Law imposes - and they are a law unto themselves, showing in this manner just how their spirit loves virtue and tends towards the supreme Good - they will be justified when God, through the Saviour, shall judge the secret actions of men.
These are many. A large number. And it will be an immense crowd... of every nation, tribe, people, language, onto whom, on the last day, through the infinite merits of Christ immolated as far as to the extreme drop of blood and [aqueous] humour, there will be impressed the seal of the living God for the salvation and reward before the extreme and final judgement.
Their virtues, their spontaneous obedience to the law of virtues, will have baptized them without any other baptism, consecrated without any other chrism than that of the infinite merits of the Saviour. Limbo will no longer be the abode of the just ones. Just as on the night of Good Friday, Limbo had emptied itself of its just ones because the Blood spilled by the Redeemer had cleansed them from original sin, so too, on Judgement Day, the merits of Christ triumphing over every enemy will absolve them of not having been of His flock for their firm faith of being in the right religion, and will reward them for their virtue exercised in life.
If it were not so, God would be cheating these just ones who gave themselves a law of justice and who defended justice and virtue. And God never cheats. It sometimes takes a long time for it to be accomplished, though always certain is His reward.»