"The scripture stands by itself and says clearly what it means."
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FWIW, the Scriptures are the only documents we have from the Apostolic era that we can be absolutely certain reveal what God wants us to know. All other sources are fallible and subject to human error. Any other sources may offer insight into the thought processes of men at the time, or the history of the time, but none of them are "God Breathed", or they would have been in the Scriptures.
FWIW, this is the Vatican's position as well. Some Catholics don't hold to Vatican teachings when it comes to scripture.
This is not supported by the scripture, for example,
the Paraclete, the Holy Ghost, whom the Father will send in my name, he will teach you all things, and bring all things to your mind, whatsoever I shall have said to you.
... and again, the Church was authorized by Christ to "bind and loose" (Mt 16, 18).
But the issue on hand is even simpler: the concept of Sola Scriptura includes the tenet of perspicuity of the scripture, -- that is, the tenet that the scripture is sufficiently clear to allow only one interpretation. Yet time and time again, Protestants discount clear verses like the "bind and loose" one, or "by works a man is justified; and not by faith only", but would offer their own fantastic explanations for verses that perhaps indeed allow several interpretations.