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.
Kiss of Judas
According to Matthew 26:50, Jesus responded by saying: "Friend, do what you are here to do". Elaine Pagels and Karen King have speculated that Jesus and Judas were actually in agreement with each other and that there was no real betrayal. Luke 22:48 quotes Jesus saying "Judas, are you betraying the Son of Humanity with a kiss?"