Aramaic Peshitta
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Aramaic Peshitta Bible Repository
Some quick notes on the Old Testament
With the New Testament, the quest for the original is easy. The historical and linguistic evidence leads us to the Peshitta New Testament, which seems to be utterly lacking in errors/contradictions.
The Old Testament is another story...
The big problem is that we "know" that the Old Testament was written in Hebrew, while the main Hebrew version (the Massoretic Text) is very late (it is even younger than the Aramaic NT and Greek NT, let alone the Septuagint and the Peshitta OT), and is full of corruptions.
The Massoretic text is well known for its numerical inconsistencies. The Septuagint (Greek OT, LXX) and Aramaic OT (Peshitta OT, POT) solve many of these problems. This already heavily indicates that the Massoretic is a corrupted version (whether intentional or not) while the LXX and POT, though translations, are more reliable - because they stem from an OLDER Hebrew version (perhaps even the original Hebrew itself).
There are also other problems with the Massoretic text, from whence most of our OT translations (KJV, NIV etc) come from. Many Messianic prophecies seem to have been "played around with" in the Massoretic text (such as "pierced my hands and feet" and "virgin"). How do we know? Because the LXX and POT retain the Messianic prophecies, as fulfilled in the New Testament. Since the Massoretic was produced in the Middle Ages, and since there is evidence of "anti-Messianic conspiracies" in ancient times (i.e. read up on Aquila), it seems easy to come to a certain conclusion... Keeping in mind that the LXX was primarily produced BEFORE Yeshua came to us in the flesh, so there was no incentive when the Septuagint was produced to tamper with the Messianic prophecies.
Yet another problem with the Massoretic is the "Elohim issue". For some reason, the Massoretic calls God "Elohim" many times, which is plural. The LXX uses singular, and so does the POT.
In any case, this is just a snippet, intended to raise some issues about the OT. I believe ALL OT versions play an important role. In fact, my belief is that since the Peshitta NT is the original New Testament and must be inerrant (my personal belief, yet to be refuted) the best source for the Old Testament quotes are actually found in the New Testament - the Aramaic Peshitta New Testament to be precise.