A very smart question as it removes much of the reasoning for argument. It might be useful to predicate the coming with the requirements of a Jew upon this time.
What are we expecting of our Lord? It's more like what are our Lords expectations of us?
Moses ben Maimon (Maimonides), also called Rambam (1135-1204), wrote in his Thirteen Articles of Faith, that belief in the Messiah was required for a Jew to be resurrected. The 12th and 13th articles both deal with Redemption, which will come in the days of Messiah.
The 13 Articles of the Jewish Faith proposed by Maimonides are these:
- God exists.
- God is one and unique.
- God is incorporeal.
- God is eternal.
- Prayer is to God only.
- The prophets spoke truth.
- Moses was the greatest of the prophets.
- The Written and Oral Torah were given to Moses.
- There will be no other Torah.
- God knows the thoughts and deeds of men.
- God will reward the good and punish the wicked.
- The Messiah will come.
- The dead will be resurrected.
These articles of faith are "expected' to be instilled in the practicing and believing Jew.
Halakhic (Legal) Literature
Neither the Mishna nor the Talmud is a true code of law. Because both the rabbinical leadership and the laypersons desired such a code - for religious purposes and for the administration of their autonomous communities - post-Talmudic authorities developed a genre of "arbitership" that followed two paths: responsa and formal codification. Each seeks to refine the Talmudic eclectic into lucid rules for religious and civil conduct, coupled with inspirational and moral messages.
Maimonides further explains in his work on the Halakhic code, the Yad haHazaqa (“The Strong Hand”

, also known as the
Mishne Torah (Second Torah) the view of redemption and the role Messiah will play. Maimonides summarizes the Jewish expectation of the Messiah.
But the expectation of Messiah, is not limited to Maimonides comments, quotes from the
Talmud,
Targum,
Midrash,
Zohar and other writings give us a vivid picture of the expectation in the Jewish world of the times of Messiah. Messianic expectation in Rabbinic times (A.D.135-1750) and in the time of Yeshua may have changed over the years. Expectations are fluid.
For example in the time of Yeshua, The Temple existed and Israel was not scattered abroad as is the case today. In the days of Maimonides, there was no Israel and no Temple, and Jews were persecuted in Europe.
If the times are to change, this is because it is supposed to change. The end of times and days is not the end of the world. It is an end of times. The end of mundane governing.
Now, if it is supposed to change, then it is in the order of change that the future follows. Both Christianity and Judaism follow this view and as such, modernization of their books can not be held back in perpetuity.
So, even the Jews are not in complete agreement. That's not surprising. Put five Jews in a room and ask them a question, you will get a hundred answers.
I believe that we shall see what we shall see. I follow the articles of faith. I truly believe them.
All the rest is interpretive. By the very nature of our creation, free will is bestowed upon us for that interpretation. The only true commands are in the commandments. All the rest is by choice. No human is perfect, thus our choices and road traveled are no more than inspired choice at best. Flawed inspiration, yields flawed choices.
So, now to the question. When the Messiah comes, what will the Messiah be? When will the Messiah come? I'll tell you.
Who knows? Not me.
I believe that we are not supposed to know, being granted free will and an intellect to make our choices. So, all we can do is interpret, discuss and follow with faith. Make our choices and reap our results of those choices.
But if the ability to make those choices is taken away from us, they become rather a moot point, don't they?
Both Judaism and Christianity employ opening, restructuring and codification of their book. Islam, by decree, and burning all other interpretations of Islam
Clicky disallows any changes to the purity of HIS words, thus suffers a (to me) dangerous intractability to modernity.
Jews believe that G-d is one and indivisible. Christians believe that G-d is a triparte, a piece of pie that is cut in three but retaining the oneness as it is still one pie.It is the major singular belief of monotheism. Jews do not cut our lord into pieces.
Shema Yisrael -- "Hear O Israel, the Lord our God, the Lord is One" -- is perhaps the most famous of all Jewish sayings. It is the most integral to who we are.
That's why Jews can not be Christians, and Christians can not be Jews. They can be Jewish by race, but not a Jew which is considered by race and belief AND practice. There is a big difference between a Jew and being Jewish. A Jew can become a Christian, but when they do, they lose their contact to the Jewish G-d as a practicing Jew.
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What will the Messiah be when he comes then?