TTWSYF,
I was not writing about my personal views. I was explaining the general Jewish understanding of the text. The following is also the same, as I am merely offering the nominal Jewish view (not my personal one as a Jew). I will offer my person take at the end, however.
First off, Jews don't believe there is a need for salvation. There is no belief in the Christian theology of Original Sin, therefore there is no theology in Judaism about the coming of a savior of any type.
The Jewish tradition of "the Messiah" developed after the time of the Prophets and before the rabbinic era began*. It was partially set in place due to the hope of restoring the Davidic dynasty after the Babylonian exile ended. When the Hasmoneans (Maccabees) began to rule, this set off the hopes even more, especially since the Hasmonean dynasty evolved into the Herodian rule, and it turned out to be corrupt and oppressive. Messianic hopes were thus shaped on the popular hopes and needs of the people, especially once the Herodians became partnered with Rome.
Thus prior to the Bar Kokhba revolt (which happened about 100 years after Jesus of Nazareth's ministry), the Jews conceived that the Messiah would be a literal person. After the Bar Kokhba revolt ended in 135/36 C.E. and the Romans removed the Jews from Judea, the idea of the Messiah became more abstract. Today some Jews still see the Messiah as an individual who will rule as king. However in today's modern society it is not likely that a monarch will be accepted by all living in Israel, let alone all people in the world. The Messianic concept speaks of the Messiah's rule as having at least some effect on the world scene, if not directly ruling over every nation. The past views of a "monarch" or "high priest" Messiah, therefore, don't seem to be literally possible, effective enough for ruling today's complex society or even desirable now.
Therefore the Messianic concept is viewed by some Jews to have been a personification of a time when humanity will reach peace between nations, when humanity will see past its differences, when the world will be a better place. As a consequence, some Jewish denominations, like those belonging to Reform Judaism, do not accept the idea of the Messiah being viewed as a literal person. It is also unclear to a few if the Messianic Era is something that will precede Olam HaBa (the eschatological "World to Come" of Judaism) or run concurrently with it. Most Jews seem to share the view that it will come before.
As for my personal views? Well, since Jews don't subscribe to "beliefs," I don't have an opinion as to which of these Jewish views are the "correct" one and which are not. Since there has never been nor is there now an expectation of a "savior" in Judaism, I have no view on the matter. It is a non-issue to me since Judaism does not read these texts in Isaiah as promising as "savior."
*--The rabbinic era is believed to be coming to an end today after about 1000 years. There will likely always be a need for rabbis to help serve Jews, but they are less and less being accepted as the final word on Jewish practices and theology. Today, especially with the Internet, most Jews live without a particular rabbi as their consultant and find the answers they search for themselves. Many rabbis serve merely on an ad-hoc basis, such as for weddings and funerals, etc.
This evolution in Judaism is now considered a normal earmark. First, we had the era of the Patriarchs, followed by that of Moses, then of Joshua and the Judges, the Kings, the Prophets, and then the era of the rabbinical teachers. Today Jews often speak of the current era as being "post-denominational, post-rabbinic," with members in the denominations under rabbis steadily decreasing in comparison with the post-denominational Jewish group which is increasing.
