I would like to address two points. St. Micheal’s errant post that the Catechism of Pope Pius taught Limbo. The following is from that Catechism:
1 Q: What are we taught in the Fifth Article: He descended into hell; the third day He rose again from the dead?
A: The Fifth Article of the Creed teaches us that the Soul of Jesus Christ, on being separated from His Body, descended to the Limbo of the holy Fathers, and that on the third day it became united once more to His Body, never to be parted from it again.
2 Q: What is here meant by hell?
A: Hell here means the Limbo of the holy Fathers, that is, the place where the souls of the just were detained, in expectation of redemption through Jesus Christ.
This is not the “limbo” referred to as the place for unbaptized babies without sin (except original sin).
But the Baltimore did teach teh following:
Q. 632. Where will persons go who – such as infants – have not committed actual sin and who, through no fault of theirs, die without baptism?
A. Persons, such as infants, who have not committed actual sin and who, through no fault of theirs, die without baptism, cannot enter heaven; but it is the common belief they will go to some place similar to Limbo, where they will be free from suffering, though deprived of the happiness of heaven.
Note how it said “common belief” which means such a teaching is a best guess of the theologians. Such a comment makes it clear that it was conjecture and not an infallible teaching.
And with regard to either of the past Catechism of Pope Pius or the current Catechism, they are not infallible/inerrant documents, as explained below.
The Catechism is not an inerrant book nor does what it teaches been presented as Revelation via an ex cathedra Teaching of the Pope. It is a reliable catechetical reference book for the faithful to reference with regard to a concise integrated summary and practical presentations of most important matters of Teaching.
This is what the Pope wrote in the introduction.
The Doctrinal Value of the Text
The Catechism of the Catholic Church, which I approved June 25th last and the publication of which I today order by virtue of my Apostolic Authority, is a statement of the Church’s faith and of catholic doctrine, attested to or illumined by Sacred Scripture, the Apostolic Tradition, and the Church’s Magisterium. I declare it to be a sure norm for teaching the faith and thus a valid and legitimate instrument for ecclesial communion. May it serve the renewal to which the Holy Spirit ceaselessly calls the Church of God, the Body of Christ, on her pilgrimage to the undiminished light of the Kingdom!
The approval and publication of the Catechism of the Catholic Church represent a service which the Successor of Peter wishes to offer to the Holy Catholic Church, to all the particular Churches in peace and communion with the Apostolic See: the service, that is, of supporting and confirming the faith of all the Lord Jesus’ disciples (cf. Lk 22:32), as well as of strengthening the bonds of unity in the same apostolic faith.
Therefore, I ask all the Church’s Pastors and the Christian faithful to receive this catechism in a spirit of communion and to use it assiduously in fulfilling their mission of proclaiming the faith and calling people to the Gospel life. This catechism is given to them that it may be a sure and authentic reference text for teaching catholic doctrine and particularly for preparing local catechisms. It is also offered to all the faithful who wish to deepen their knowledge of the unfathomable riches of salvation (cf. Eph 3:8). It is meant to support ecumenical efforts that are moved by the holy desire for the unity of all Christians, showing carefully the content and wondrous harmony of the catholic faith. The Catechism of the Catholic Church, lastly, is offered to every individual who asks us to give an account of the hope that is in us (cf. 1 Pet 3:15) and who wants to know what the Catholic Church believes.