Shibboleth:
I do not see why oral traditions are considered less than written traditions. Many books originally were orally passed down. I doubt that Noah or his children wrote the story of the flood. The story was probably told many times before someone, probably in Babylon, wrote it down for the first time.
Homer was a blind man and no doubt was illiterate yet he is still given credit for the Iliad and the Odyssey as it stands today. I am sure that he was not the first to teach it through verbal rhetoric.
Lets look at the concept of Fahrenheit 451. If people started burning the Bible and Christians in an attempt to preserve it started memorizing it word for word, would it be any less scripture or the Bible?
Well first of all you are comparing books that were written by man in every way to the Bible which was written by God through men. The Holy Spirit is the primary author of Scripture says the Catechism of the Catholic Church.Here is what the Catechism says about the relationship between Scripture and Tradition:
II. The Relationship Between Tradition and Sacred Scripture
One common source. . .
80 "Sacred Tradition and Sacred Scripture, then, are bound closely together, and communicate one with the other. For both of them, flowing out from the same divine well-spring, come together in some fashion to form one thing, and move towards the same goal."
40 Each of them makes present and fruitful in the Church the mystery of Christ, who promised to remain with his own “always, to the close of the age”.
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. . . two distinct modes of transmission
81 "Sacred Scripture is the speech of God as it is put down in writing under the breath of the Holy Spirit."
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"and [Holy] Tradition transmits in its entirety the Word of God which has been entrusted to the apostles by Christ the Lord and the Holy Spirit. It transmits it to the successors of the apostles so that, enlightened by the Spirit of truth, they may faithfully preserve, expound and spread it abroad by their preaching."
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82 As a result the Church, to whom the transmission and interpretation of Revelation is entrusted, "does not derive her certainty about all revealed truths from the holy Scriptures alone. Both Scripture and Tradition must be accepted and honoured with equal sentiments of devotion and reverence."
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