Let me do a bit here:
Then there is his assertion that he knew Hebrew. Something most jews in 1st century CE did not know. But it seems clear Paul could not read Hebrew.
That reminds me. Whenever the New Testament (or early Christian writers) talks about “Hebrew”, there is fairly a good chance that they’re actually talking about Judean Aramaic, the
lingua franca of many Palestinian Jews of the period – i.e. it is called ‘Hebrew’ because at that time, it is the native tongue of many Hebrews.
After all, it is believed that ‘real’ Hebrew at this time was mostly used for scholarly or religious purposes, though some have already presented hypotheses that Hebrew actually continued to be a spoken tongue through the early centuries AD/CE in some communities. It would not be too much of a stretch to say Paul knew Aramaic – since it is the mother tongue of many Jews in the Holy Land he would have met, or (if Hebrew actually continued to be a living language) Hebrew.
WHenever he cites from the Bible, he is clearly doing so from the Septuagint. The Septuagint does not always adhere to the original Hebrew meaning.
Paul was not the only one who does this; when Jesus is described by the New Testament as quoting from the Hebrew Bible, the quotations that are given also correlate with the Septuagint more than the Masoretic.
Most scholars suggest that the New Testament authors just most likely used an edition of the Septuagint, rather than translate a Hebrew (or Aramaic) source.
Perhaps we can say the same for Paul; since he mostly writes to communities with Hellenistic Jewish or gentile backgrounds, he would have just used the Septuagint for convenience, since his target audience would have been more familiar with it.
The Septuagint enjoyed widespread use in the Hellenistic Jewish diaspora and even in Jerusalem (which was by this time a cosmopolitan, and therefore Greek-speaking town) during the 1st century. Many Jewish authors, aside from the NT writers (such as Philo and Josephus) used the translation. It was in fact only in the 2nd century that several factors led most Jews to abandon use of the Septuagint. The earliest gentile Christians of necessity used it, as it was at the time the only Greek version of the bible, and most, if not all, of these early non-Jewish Christians could not read Hebrew. The association of the Septuagint with a rival religion may have rendered it suspect in the eyes of the newer generation of Jews and Jewish scholars.
Perhaps more importantly, Greek declined among most Jews after most of them fled from the Greek-speaking eastern Roman Empire into the Aramaic-speaking Persian Empire when Jerusalem was destroyed by the Romans in 70 A.D. Instead, they used Hebrew/Aramaic Targums later compiled by the Masoretes; and authoritative Aramaic translations, such as those of Onkelos and Rabbi Yonathan ben Uziel.
The translation only began to lose Jewish sanction after differences between it and contemporary Hebrew scriptures were discovered. Even Greek-speaking Jews — such as those remaining in Palestine — tended less to the Septuagint, preferring other Jewish versions in Greek, such as that of Aquila or Symmachus or Theodotion, which seemed to be more concordant with contemporary Hebrew texts.
The discovery of many fragments in the Dead Sea scrolls that agree with the Septuagint rather than the Masoretic Text proved that many of the variants in Greek were also present in early Semitic manuscripts. Therefore, the most widely accepted view today is that the original Septuagint provided a reasonably accurate record of an early Semitic textual variant, now lost, that differed from the ancestors of the Masoretic text, contrary to the earlier assumption that the Septuagint was a corrupt translation of the Hebrew (which is usually identified as synonymous with the Masoretic Text). We can presume that either:
1.) Paul and the other NT writers used the Septuagint (or did their own paraphrases) for convenience, in respect for their target audience; or
2.) Paul and the other NT writers relied on textual variants of the Tanakh more closer to that represented by the LXX rather than the Masoretic.