Ok... I'm still trying to figure out why this post #11 is being referred to like scripture itself. It seems like the answer to any question is found in THE Post #11.
For it is written in; Post#11, What it is NOT: verse 2. A teaching that Scripture is "finished." It's not a teaching at all. ........
Just tell me the point your trying to make please.
Good point, seeing that the official, formal, historical, confessional, verbatim definition of the principle/praxis/rule/teaching doctrine of sola scriptura offered to us in post #11 doesn't offer any scripture to support it.
Even more troublesome is when we look at the quote in context:
[9] In the pure churches and schools these public common writings have been always regarded as the sum and model of the doctrine which Dr. Luther, of blessed memory, has admirably deduced from God's Word, and firmly established against the Papacy and other sects; and to his full explanations in his doctrinal and polemical writings we wish to appeal, in the manner and as far as Dr. Luther himself in the Latin preface to his published works has given necessary and Christian admonition concerning his writings, and has expressly drawn this distinction namely, that the Word of God alone should be and remain the only standard and rule of doctrine, to which the writings of no man should be regarded as equal, but to which everything should be subjected.
(emphasis mine)
The Solid Declaration of the Formula of Concord - Book of Concord
(Thanks to MoreCoffee for provided the link to the source of the official, formal, historical, confessional, verbatim definition of the principle/praxis/rule/teaching doctrine of sola scriptura)
Further exploration of the above document will reveal the authors condemnations of anyone who disagrees with them as well as the conspicuous absence any provision which allows for the private judgement or the personal reading of scripture, the sola scripturist concept that the bible is reliable for making everyday decisions or, in your case, that scripture interprets scripture.
No, the official, formal, historical, confessional, verbatim definition of the principle/praxis/rule/teaching doctrine of sola scriptura offered to us in post #11 only allows Lutheran churchmen to to employ the official, formal, historical, confessional, verbatim definition of the principle/praxis/rule/teaching doctrine of sola scriptura and then only for norming dogma. If you're not Lutheran, and if your not norming dogma, sola scriptura is not for you.
So, what are we to think of the sola scripturists whose application of the principle/praxis/rule/teaching doctrine of sola scriptura comes into conflict with the one provided to us in post #11? Obviously, in spite of the protest to the contrary, there's other definitions out there.
So, where did you get the idea that sola scriptura included the concept that scripture interprets scripture?