My understanding of Protestant belief is that they do not recognize the Deuterocannon as scripture based on the fact that the Jewish leaders rejected those books as not being divinely inspired at the Council of Jamnia. They further take a “Bible only” approach to understanding their faith, rejecting Sacred Tradition.
However, the Bible itself requires further reading in order to FULLY understand it’s scripture, as can be seen by the Letter of Jude and the Letter to the Hebrews, both of which cite apocryphal works (The Book of Enoch, The Assumption of Moses) not found in the Bible, but which are and were a part of the Sacred Tradition of the Jewish people.
Therefore, in order to fully understand the Bible, one would have to acknowledge that the Bible alone is not the only source of knowledge for understanding the faith, as one would need to read elsewhere in order to fully understand the context of the Bible itself. Acknowledging this, as such, leads one to an acceptance that tradition is important alongside Scripture.
Now, granted, Jewish Sacred Tradition and Catholic Sacred Tradition clearly diverge, but simply the acknowledgement that one is necessary for understanding of the faith, even if only in part, should refute the “Bible only” approach, and open the door to acceptance that the other may well play a vital role in understanding the faith as well. Thoughts?