According to the Catechism of St. Pius X:
"32 Q. What should a Christian do who has been given a Bible by a Protestant or by an agent of the Protestants?
A. A Christian to whom a Bible has been offered by a Protestant or an agent of the Protestants should reject it with disgust, because it is forbidden by the Church. If it was accepted by inadvertence, it must be burnt as soon as possible or handed in to the Parish Priest.
33 Q. Why does the Church forbid Protestant Bibles?
A. The Church forbids Protestant Bibles because, either they have been altered and contain errors, or not having her approbation and footnotes explaining the obscure meanings, they may be harmful to the Faith. It is for that same reason that the Church even forbids translations of the Holy Scriptures already approved by her which have been reprinted without the footnotes approved by her."
Is the Catechism of St. Pius X still valid and binding? If we are in possession of a Protestant bible, are we obligated (under pain of mortal sin) to burn it or surrender it to the parish priest, as instructed?