Jesus in Chazal

In the Second Century many Jews believed that Jesus had learned magic in Egypt. This is already believed by Celsus who debated with Origen in the late Second Century (Origen, Contra Celsum, i. 28)

http://legacy.tyndale.cam.ac.uk/Tyndale/staff/Instone-Brewer/prepub/07_Instone_Brewer.pdf

A well known anti-christian treatise called Toldot Yeshu which can be dated to the 10th century but contains materials that can be dated back to the 2nd century. Excerpts

In the year 3671in the days of King [Yannai], a great misfortune befell Israel, when there arose a certain disreputable man of the tribe of Judah, whose name was Joseph Pandera. He lived at Bethlehem, in Judah.

Near his house dwelt a widow and her lovely and chaste daughter named Miriam. Miriam was betrothed to Yohanan, of the royal house of David, a man learned in the Torah and God-fearing.

At the close of a certain Sabbath, Joseph Pandera, attractive and like a warrior in appearance, having gazed lustfully upon Miriam, knocked upon the door of her room and betrayed her by pretending that he was her betrothed husband, Yohanan. Even so, she was amazed at this improper conduct and submitted only against her will. ...

Miriam gave birth to a son and named him Yehoshua, after her brother. This name later deteriorated to Yeshu. ...

One day Yeshu walked in front of the Sages with his head uncovered, showing shameful disrespect. At this, the discussion arose as to whether this behavior did not truly indicate that Yeshu was an illegitimate child and the son of a niddah. Moreover, the story tells that while the rabbis were discussing the Tractate Nezikin, he gave his own impudent interpretation of the law and in an ensuing debate he held that Moses could not be the greatest of the prophets if he had to receive counsel from Jethro. This led to further inquiry as to the antecedents of Yeshu, and it was discovered through Rabban Shimeon ben Shetah that he was the illegitimate son of Joseph Pandera. Miriam admitted it.After this became known, it was necessary for Yeshu to flee to Upper Galilee. ...

Lions of brass were bound to two iron pillars at the gate of the place of burnt offerings. Should anyone enter and learn the [special 'Ineffable'] Name, when he left the lions would roar at him and immediately the valuable secret would be forgotten.

Yeshu came and learned the letters of the Name; he wrote them upon the parchment which he placed in an open cut on his thigh and then drew the flesh over the parchment. As he left, the lions roared and he forgot the secret. But when he came to his house he reopened the cut in his flesh with a knife an lifted out the writing. ...

Yeshu proclaimed, "I am the Messiah; and concerning me Isaiah prophesied and said, 'Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel.'" ...

The insurgents with him replied that if Yeshu was the Messiah he should give them a convincing sign. They therefore, brought to him a lame man, who had never walked. Yeshu spoke over the man the letters of the Ineffable Name, and the leper was healed. Thereupon, they worshipped him as the Messiah, Son of the Highest.

When word of these happenings came to Jerusalem, the Sanhedrin decided to bring about the capture of Yeshu. They sent messengers, Annanui and Ahaziah, who, pretending to be his disciples, said that they brought him an invitation from the leaders of Jerusalem to visit them. Yeshu consented on condition the members of the Sanhedrin receive him as a lord. He started out toward Jerusalem and, arriving at Knob, acquired an ass on which he rode into Jerusalem, as a fulfillment of the prophecy of Zechariah.

The Sages bound him and led him before Queen Helene, with the accusation: "This man is a sorcerer and entices everyone."

...

Yeshu spoke up: "Madam, I am the Messiah and I revive the dead." A dead body was brought in; he pronounced the letters of the Ineffable Name and the corpse came to life. The Queen was greatly moved and said: "This is a true sign." She reprimanded the Sages and sent them humiliated from her presence. Yeshu's dissident followers increased and there was controversy in Israel.

...

Then the Sages selected a man named Judah Iskarioto and brought him to the Sanctuary where he learned the letters of the Ineffable Name as Yeshu had done.

When Yeshu was summoned before the queen, this time there were present also the Sages and Judah Iskarioto. Yeshu said: "It is spoken of me, 'I will ascend into heaven.'" He lifted his arms like the wings of an eagle and he flew between heaven and earth, to the amazement of everyone.

The elders asked Iskarioto to do likewise. He did, and flew toward heaven. Iskarioto attempted to force Yeshu down to earth but neither one of the two could prevail against the other for both had the use of the Ineffable Name. However, Iskarioto defiled Yeshu, so that they both lost their power and fell down to the earth, and in their condition of defilement the letters of the Ineffable Name escaped from them. Because of this deed of Judah they weep on the eve of the birth of Yeshu.

Yeshu was seized. His head was covered with a garment and he was smitten with pomegranate staves; but he could do nothing, for he no longer had the Ineffable Name.

Yeshu was taken prisoner to the synagogue of Tiberias, and they bound him to a pillar. To allay his thirst they gave him vinegar to drink. On his head they set a crown of thorns. ... there Yeshu remained until the eve of the Passover.

...

Yeshu was put to death on the sixth hour on the eve of the Passover and of the Sabbath. When they tried to hang him on a tree it broke, for when he had possessed the power he had pronounced by the Ineffable Name that no tree should hold him. He had failed to pronounce the prohibition over the carob-stalk[10], for it was a plant more than a tree, and on it he was hanged until the hour for afternoon prayer, for it is written in Scripture, "His body shall not remain all night upon the tree." They buried him outside the city.

...

The Sages desired to separate from Israel those who continued to claim Yeshu as the Messiah, and they called upon a greatly learned man, Simeon Kepha, for help. Simeon went to Antioch, main city of the Nazarenes and proclaimed toe them: "I am the disciple of Yeshu. He has sent me to show you the way. I will give you a sign as Yeshu has done."

Simeon, having gained the secret of the Ineffable Name, healed a leper and a lame man by means of it and thus found acceptance as a true disciple. He told them that Yeshu was in heaven, at the right hand of his Father, in fulfillment of Psalm 110:1. He added that Yeshu desired that they separate themselves from the Jews and no longer follow their practices, as Isaiah had said, "Your new moons and your feasts my soul abhorreth." They were now to observe the first day of the week instead of the seventh, the Resurrection instead of the Passover, the Ascension into Heaven instead of the Feast of Weeks, the finding of the Cross instead of the New Year, the Feast of the Circumcision instead of the Day of Atonement, the New Year instead of Chanukah; they were to be indifferent with regard to circumcision and the dietary laws. Also they were to follow the teaching of turning the right if smitten on the left and the meek acceptance of suffering. All these new ordinances which Simeon Kepha (or Paul, as he was known to the Nazarenes) taught them were really meant to separate these Nazarenes from the people of Israel and to bring the internal strife to an end.

See Ephraim Urbach, "Rabbinic Exegesis About Gentile Prophets And The Balaam Passage" (Hebrew), Tarbitz (25:1956), pp. 272-289