Just recently I saw a long list of such "quotes", and could readily see that most all in which I had strong familiarity with, could be derived from the Hebrew canon, in fact most needed to be for sake of contextual deeper meanings, tying together broader themes, even if some form of "repeat" of those words and phrases could be in the works referred to as apocryphal.
Those wishing to make the "80%" claim, might do well to dig deep and see how much of that can be easily enough falsifiable (otherwise found in Hebrew canon).
I lay that duty not to your own charge, but more as a precautionary note.
Why should things be seen as nebulous? Are we to believe the Jews lost their own Holy Writ? Even as we have clear enough indications there was resistance and complaint on their account that works such as the Septuagint went beyond what they considered to be Hebrew canon, in that first century or so after Christ?
What of Jerome? And Before him Melito (which we have no real real extant texts for, but mention and quotes from him, significant to this discussion by Jerome).
I do not believe there is any listing of what is to be considered Old Testament outside of Judaism, earlier than Melito. he died in 180 A.D.
What of Josephus? I sure do enjoy using him as a secular proof for the life and death of Christ, with Josephus also including brief comment as to the dispute over what happened to "the body" which parallels strongly what we see in the New Testament.
I'll go and check the link... yet I can hardly imagine the questions I raise again [repeat, sorry] here will be sufficiently addressed.
Thank you for your kind and polite reply. I'm not certain I deserve such, but I have noticed that you are quite polite as habit, and I do respect and appreciate that, even as we can have some small matters of disagreement.
I can't lay my hands on it now, but I got a lot of my notions from Timothy McLay (google him), an Evanglical scholar ---his publisher is Eerdmans anyhow, he teaches at St. Stephen’s University in New Brunswick. His statistical analysis of the lexicon is dauntingly technical, but he goes beyond just word-mincing: he argues that the whole theology of the NT exhibits the strong influence of the Greek scriptural tradition not only in its vocabulary, but also in its citations of Scripture, and its concepts.
-- and also from the great, great, great Jarislav Peliken, once-Evangelical Lutheran, studied with the rabbis, joined the Orthodox---Russian Orthodox, I think, St. Vladimir's--- and has now passed on to his reward where --- ahem --- everyone is Catholic. (I mean, 'catholic,' as in kata-holos!) ;o)
I want to thank you, too, for a pleasant and reasonable discussion. I regret that sometimes in these disputes, one scarcely gets in impression that the belligerents are actually people who share a love of the Lord Jesus. In any case, I do ask your prayers, and think, on the whole, we will draw the closer, the closer we draw to Our Lord.