Well, technically, Christianity is a part of Judaism that believes the Messiah has come...


Look at Isaiah 53:

Isaiah 53

1 Who has put faith in the thing heard by us? And as for the arm of Jehovah, to whom has it been revealed? 2 And he will come up like a twig before one, and like a root out of waterless land. No stately form does he have, nor any splendor; and when we shall see him, there is not the appearance so that we should desire him.

3 He was despised and was avoided by men, a man meant for pains and for having acquaintance with sickness. And there was as if the concealing of one's face from us. He was despised, and we held him as of no account. 4 Truly our sicknesses were what he himself carried; and as for our pains, he bore them. But we ourselves accounted him as plagued, stricken by God and afflicted. 5 But he was being pierced for our transgression; he was being crushed for our errors. The chastisement meant for our peace was upon him, and because of his wounds there has been a healing for us. 6 Like sheep we have all of us wandered about; it was each one to his own way that we have turned;and Jehovah himself has caused the error of us all to meet up with that one. 7 He was hard pressed, and he was letting himself be afflicted; yet he would not open his mouth. He was being brought just like a sheep to the slaughtering; and like a ewe that before her shearers has become mute, he also would not open his mouth.

8 Because of restraint and of judgment he was taken away; and who will concern himself even with [the details of] his generation? For he was severed from the land of the living ones. Because of the transgression of my people he had the stroke. 9 And he will make his burial place even with the wicked ones, and with the rich class in his death, despite the fact that he had done no violence and there was no deception in his mouth.

10 But Jehovah himself took delight in crushing him; he made him sick. If you will set his soul as a guilt offering, he will see his offspring, he will prolong [his] days, and in his hand what is the delight of Jehovah will succeed. 11 Because of the trouble of his soul he will see, he will be satisfied. By means of his knowledge the righteous one, my servant, will bring a righteous standing to many people; and their errors he himself will bear. 12 For that reason I shall deal him a portion among the many, and it will be with the mighty ones that he will apportion the spoil, due to the fact that he poured out his soul to the very death, and it was with the transgressors that he was counted in; and he himself carried the very sin of many people, and for the transgressors he proceeded to interpose.
Now that is Isaiah talking about?


Take the second question posed by Isaiah:
"And as for the arm of Jehovah, to whom has it been revealed?"

Isaiah is talking about an 'arm of Jehovah(God).' In the bible, the world 'arm' or 'hand' are both used many times to figuaratively describe a force(Jer 27:5), God's force or 'arm.'

Evidently from the rest of the first paragraph, Isaiah is talking about a person because he uses the pronoun 'he.' He proceeds to desribe his coming.

"And he will come up like a twig before one, and like a root out of waterless land. No stately form does he have, nor any splendor; and when we shall see him, there is not the appearance so that we should desire him."

Jews at the time of Jesus were historically rebelious againt the Roman authority. Many false Messiahs had come before as rebels. Many of the Jews were looking for somone like Moses or David to overthrow the Roman occupation. This expectation is confirmed at Luke 24:21.

"21 But we were hoping that this [man] was the one destined to deliver Israel; yes, and besides all these things, this makes the third day since these things occurred."

However, the Hebrew scriptures paint the Messiah as having two roles. In one way, the Messiah was humble going to appear humbly as in Zecheriah 9:9 states:

"Be very joyful, O daughter of Zion. Shout in triumph, O daughter of Jerusalem. Look! Your king himself comes to you. He is righteous, yes, saved; humble, and riding upon an ass, even upon a full-grown animal the son of a she-ass."

In another way, he was coming as a mighty man to destroy the opposers of God such as Daniel 7:13 which reads:

"I kept on beholding in the visions of the night, and, see there! with the clouds of the heavens someone like a son of man happened to be coming; and to the Ancient of Days he gained access, and they brought him up close even before that One. 14 And to him there were given rulership and dignity and kingdom, that the peoples, national groups and languages should all serve even him. His rulership is an indefinitely lasting rulership that will not pass away, and his kingdom one that will not be brought to ruin."

Now, these are two very different roles, many of the Jews of his time didn't recognize that these were TWO different comings of the Messiah.

The fact that there are two comings can be furthered inferred by Psalms 2:6-9:

"6 [God Saying:] "I, even I, have installed my king
Upon Zion, my holy mountain."

7 Let me refer to the decree of Jehovah;
He has said to me: "You are my son;
I, today, I have become your father.

8 Ask of me, that I may give nations as your inheritance
And the ends of the earth as your own possession.

9 You will break them with an iron scepter,
As though a potter's vessel you will dash them to pieces."

That passage in Psalms refers to the Messiah. This corralates with part of Daniel's writings about the Messiah but not Zecheriah or Isaiah.

Thus it can be reasoned that, the Messiah will do TWO distinct things at TWO seperate times. Thus, whoever this Christ was, he would come twice. Once to save humanity and another to wipe out all who oppose the true worship of God.