Judas Iscariot
Judas Iscariot (died AD) was a disciple and one of the original Twelve Disciples of Jesus Christ. According to all four canonical gospels, Judas betrayed Jesus to the Sanhedrin in the Garden of Gethsemane by kissing him and addressing him as "Rabbi" to reveal his identity to the crowd who had come to arrest him. His name is often used synonymously with betrayal or treason. Judas's epithet "Iscariot" most likely means he came from the village of Kerioth, but this explanation is not universally accepted and many other possibilities have been suggested.
Rejection of Jesus
Jesus is rejected in Judaism as a failed Jewish Messiah claimant and a false prophet by most Jewish denominations. However, Messianic Jewish congregations like Jews for Jesus have made the case that he is the Messiah promised by the Torah and the Prophets. On the Jewish side, the accounts of Jewish rejection of Jesus are prominently featured in the Birkat haMinim of the Amidah and the Talmud. The Talmud indicates that Rabbi Gamaliel II directed Samuel ha-Katan to write another paragraph for the central Amidah-prayer, inveighing against (early Christian) informers and heretics, which was inserted as the twelfth paragraph in modern sequence (Birkat haMinim).