Of course, the question also arises: "which Septuagint is being referred to?"
The priority of the LXX (or more properly OG in scholarly terms) in textual studies is not as solid as you suggest. An excellent overview of the difficulties of textual criticism regarding the LXX and the Masoretic Text can be found in Invitation to the Septuagint by Karen H. Jobes and Moises Silva (Baker/Paternoster, 2000), especially in the chapter: "Using the Septuagint for the Textual Criticism of the Hebrew Bible." This chapter is helpful because the authors present the various approaches to textual criticism, including starting with the LXX rather than the MT, and the methodological problems for each approach.
The follow-on chapter is "The Judean Desert Discoveries and Septuagint Studies." And as might be expected, manuscript discoveries are not uniform, so they do not conclusively support the priority of either MT or the LXX.
Interestingly the authors deal with Samuel-Kings relative to LXX and MT, and then also in relationship to the finds at Qumran.
And as a further thought, doublets in stories (common in Gospel criticism as well) do not necessarily imply later redaction by the author. That is an assumption, not a proven fact.
The priority of the LXX (or more properly OG in scholarly terms) in textual studies is not as solid as you suggest. An excellent overview of the difficulties of textual criticism regarding the LXX and the Masoretic Text can be found in Invitation to the Septuagint by Karen H. Jobes and Moises Silva (Baker/Paternoster, 2000), especially in the chapter: "Using the Septuagint for the Textual Criticism of the Hebrew Bible." This chapter is helpful because the authors present the various approaches to textual criticism, including starting with the LXX rather than the MT, and the methodological problems for each approach.
The follow-on chapter is "The Judean Desert Discoveries and Septuagint Studies." And as might be expected, manuscript discoveries are not uniform, so they do not conclusively support the priority of either MT or the LXX.
Interestingly the authors deal with Samuel-Kings relative to LXX and MT, and then also in relationship to the finds at Qumran.
And as a further thought, doublets in stories (common in Gospel criticism as well) do not necessarily imply later redaction by the author. That is an assumption, not a proven fact.
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