gengwall

I think I found the clue in 1st Cor 14:33. First, some background. This from http://www.mythfolklore.net/bibgreek/alphabet/tips_punctuation.htm

“About quotations. In the absence of quotation marks, there are some editorial conventions that can help you to recognize a quotation. First, a quotation inside a sentence may begin with a capital letter, just like in English. Notice also that there is an acute accent, instead of a grave accent, on the word immediately preceding the beginning of the quotation.”1

With that in mind, we need to look at verse 33 to see the beginning of the quotation. At the end of verse 33 we have this clause:

“as in all the churches of the saints” (NASB)

Most translations have that as a clause ending the sentence in verse 33. But if we looked at a fully accented text, which you can do here, you will see that the omega in hos (“as”) is capitalized2.  The quote actually begins with this phrase and continues through verse 35. So, the entire quote from the Corinthians is:

“As in all the churches of the saints, the women are to keep silent in the churches; for they are not permitted to speak, but are to subject themselves, just as the Law also says. If they desire to learn anything, let them ask their own husbands at home; for it is improper for a woman to speak in church.”

And of course, Paul’s refutation of that nonsense follows.

So to reiterate, I think we need more grammatical clues than the occurance of “but” to identify where Paul is quoting and where he is himself speaking.
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1. Biblical Greek Online. Laura Gibbs, Ph.D.
2. A caveat: the accented Greek text I reference does not state its source. I am assuming they are using a published standard Greek text but can not state that for a fact. Still, there is no evidence that they have an agenda regarding 1 Corinthians 14:33 so I have no reason to doubt the authenticity of the capitalization I note.