I have read a rabbi comment on this too. I'm not Jewish but I found it very intresting.
In response to the person above me. There may have been a lot of people running around claiming to be messiah then. That's because that is when He was supposed to come. There was only one who conquered the grave though. I don't know that any claimed to be messiah, but if there were, it dosen't change what happened.
Edit: I don't know of any christians that think Jews will worship antichrist. I understand how you would come to this conclusion, because of the differing descriptions of messiah. This is from a rabbi who accepted Jesus as messiah, which is rare I know.
Day after day, the Sadducees offered their sacrifices at the Temple. Thousands upon thousands of animals were slain, and gallons of blood were poured out on the altar. Lambs and goats and rams and calves were offered up to a holy God. Yet the people could not see.
The Pharisees studied the Torah day and night. They added new regulations to old laws, and they developed the most detailed system of ritual purity that the world has ever known. They taught that study of the Law was more loved by God than even the offerings themselves. Yet they failed to see the heart of the matter. They failed to grasp the fundamental meaning of it all.
For it was not the blood of bulls that God wanted for Himself; it was not the fat of rams that He desired. It was not a people of outward holiness that He sought for; He did not require a new code that would keep men clean. No. He wanted a substitute, a righteous lamb who would bear His people's sins. He wanted a spotless sacrifice who would purify the people within.
Over and over again, a thousand times ten thousand, the offerings were brought before the altar. And over and over again, in numbers too great to count, their innocent blood was spilled. And over and over again, the message of God was crying out: "A substitute must come! A substitute must come!"
The Jewish people of Yeshua's day were all looking for a Savior. Some hoped for a mighty military Leader, while others looked for a Deliverer from the sky. Some looked for a holy Priest, while others looked for a Teacher of Righteousness. Yet no one was looking for a Crucified Messiah. And no one was looking for the Lamb of God. They had forgotten that the righteous Servant of the Lord was Himself to be an 'asham - an offering for sin (Isaiah 53:10). And they had forgotten father Abraham's words that God would provide the lamb for the burnt offering (Genesis 22:8).
Yes, there were some rabbis who claimed that every sacrifice was accepted on the basis of Abraham's offering up of Isaac. And they claimed that in the Passover rite, when God "saw the blood" (Exodus 12), He was looking at the sacrifice of Isaac and not at the blood of the lamb.
Yet, Isaac was not offered, and his blood was never shed. And it was God Himself Who provided the sacrifice that saved the life of Abraham's son. It was Messiah who suffered and died, and it is by His wounds that we are healed (Isaiah 53:5). It was He who bore our sins (Isaiah 53:7, 12 and Leviticus 16:22).
Oh yes, there were Jewish teachers who believed that the suffering of the righteous could bring atonement to the world. Yet when the truly Righteous One suffered and died, they said that it was for nought.