Question: How did Jesus identify the one who would betray him?
About the article "Last Supper", section "Prediction of Judas' betrayal".

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In , , and during the meal, Jesus predicted that one of his Apostles would betray him.
Jesus is described as reiterating, despite each Apostle's assertion that he would not betray Jesus, that the betrayer would be one of those who were present, and saying that there would be "woe to the man who betrays the Son of man!
It would be better for him if he had not been born."
In and , Judas is specifically identified as the traitor.
In the Gospel of John, when asked about the traitor, Jesus states: “It is the one to whom I will give this piece of bread when I have dipped it in the dish.” Then, dipping the piece of bread, he gave it to Judas, the son of Simon Iscariot.
As soon as Judas took the bread, Satan entered into him."
At what Jesus knows will be the Last Supper, he pours wine and passes bread for his apostles.
He's very aware of the ordeal he faces.
He is stung when the others don't pay much attention to him; "For all you care this wine could be my blood / For all you care this bread could be my body," he remarks ("The Last Supper"), alluding to (and anticipating) the Christian doctrine of the Eucharist.
He asks them to remember him when they eat and drink; he predicts that Peter will deny him three times "in just a few hours" and that one of them will betray him.
Judas, believing that Jesus already knows ("cut the dramatics, you know very well who"), admits he is the one and angrily accuses Jesus of acting recklessly and egotistically.
Claiming he doesn't understand Jesus' decisions, he leaves to bring the Roman soldiers.
The remaining apostles fall asleep, and Jesus retreats to the Garden of Gethsemane to pray.
He admits to God his doubts, fears and anger, that he is tired and has done all he can.
He asks powerfully if any of it has meaning and implores God not let him suffer the horrible death that portends for him.
He feels disillusioned with his quest as the Messiah, doesn't understand what it has achieved and wishes to give up.
Receiving no answer, Jesus realizes that he cannot defy God's will, and surrenders to God.
His prayer ends with a request that God take him immediately, "before I change my mind" ("Gethsemane (I Only Want to Say)").
Judas arrives with Roman soldiers and identifies Jesus by kissing him on the cheek.
Jesus is arrested, and his apostles attempt to fight the soldiers.
Jesus tells them to let the soldiers take him to Caiaphas.
On the way, a mob (acting like—and sometimes represented as—modern-day news reporters) asks Jesus what he plans to do, but Jesus declines to comment.
When Jesus is brought to trial before the Sanhedrin, Caiaphas asks if he is the son of God.
Jesus responds: "That's what you say, you say that I am."
This answer is affirmative according to Jewish custom, and that provides enough justification for the high priests to send Jesus to Pontius Pilate ("The Arrest").
Meanwhile, Jesus' apostle Peter is confronted by an old man, a soldier and a maid, and Peter denies to each that he knows Jesus.
Mary asks Peter why he denied Jesus, and Peter responds that he had to do it in order to save himself.
Mary wonders how Jesus knew that Peter would deny him three times ("Peter's Denial").
Pilate asks Jesus if he is the son of God.
Jesus gives the same answer that he gave Caiaphas: "that's what "you" say."
Since Jesus is from Galilee, Pilate says that he is not under his jurisdiction and sends him to King Herod ("Pilate and Christ").
As Jesus is dragged away, the chorus asks where Jesus' power has gone ("Hosanna Reprise").
In a mocking ragtime number, the decadent and flamboyant King Herod asks Jesus to prove his divinity by performing miracles, offering to free him if he complies; but Jesus ignores him.
Herod decides that Jesus is just another phony messiah and angrily sends him back to Pilate ("Herod's Song (Try It and See)").
The apostles and Mary Magdalene remember when they first began following Jesus, and wish that they could return to a time of peace ("Could We Start Again, Please?")
Feeling extreme guilt for Jesus' harsh treatment by the authorities, and panicking that he will be seen as responsible, Judas expresses regret to the priests, fearing he will forever be remembered as a traitor.
Caiaphas and Annas say that what he has done will save everyone and that he should not feel remorse for his actions before throwing him out of their temple.
Left alone, recognition dawns that memories of this could haunt the rest of his life, that God chose him to be the one to betray Jesus, and that he has been used as a pawn for the "foul bloody crime".
He suffers a mental breakdown during the epiphany, cursing God for his manipulative ways, and in a final attempt to detach himself from his destiny, he commits suicide by hanging himself from a tree ("Judas' Death").
At Jesus' trial, Pilate asks the crowd if they would crucify Jesus, their king, and they declare: "We have no king but Caesar!"
Pilate remembers the dream he had about the crowd and the unjust execution of Jesus ("Pilate's Dream" instrumental).
Pilate tells the crowd that, while Jesus should be imprisoned, he does not deserve to die.
Pilate demands that the crowd give him a reason to condemn Jesus, and the crowd breaks into a pep rally-style cheer about how Jesus is a blasphemer and has defied Rome.
After revealing Jesus as nothing more than a pathetic human being ('Behold the man!
"), Pilate calls the crowd hypocrites, as he knows they hate Roman rule.
He attempts to satisfy their bloodlust by having Jesus whipped, counting thirty-nine bloody strokes.
Pilate, clearly disturbed by the whole ordeal, pleads with Jesus to defend himself; but Jesus says weakly that everything has been determined (by God), and Pilate cannot change it.
The crowd still screams for Jesus to be crucified, and Pilate recalls his duty to keep the peace.
He reluctantly agrees to crucify Jesus to keep the crowd from getting violent ("Trial Before Pilate (Including the Thirty-Nine Lashes)").
Pilate then washes his hands of Jesus' death: "I wash my hands of your demolition/Die if you want to, you innocent puppet".
As Jesus prepares to be crucified, he is mocked by a vision of Judas.
Judas questions why Jesus chose to arrive in the manner and time that he did, and if what happened to him was really part of a divine plan, but Jesus does not say ("Superstar").
As Jesus is nailed to the cross, some productions opt to show Judas suffering a stigmata-like effect, indicating that he is paying for his sin.
After reciting his final words and commending his spirit to God, Jesus slowly dies on the cross, his fate coming full circle ("The Crucifixion").
The final instrumental number shows the Apostles, Mary and Judas mourning the death of their fallen savior, reflecting on the impact he's had on their lives ("John Nineteen: Forty-One"). 
The Last Supper is the final meal that Jesus shares with his twelve apostles in Jerusalem before his crucifixion.
The Last Supper is mentioned in all four canonical gospels, and Paul's First Epistle to the Corinthians () also refers to it.
During the meal, Jesus predicts that one of his apostles will betray him.
Despite each Apostle's assertion that he would not betray him, Jesus reiterates that the betrayer would be one of those present.
and specifically identify Judas as the traitor.
In the Synoptics, Jesus takes bread, breaks it and gives it to the disciples, saying, "This is my body, which is given for you".
He then has them all drink from a cup, saying, "This cup that is poured out for you is the new covenant in my blood" ().
The Christian sacrament or ordinance of the Eucharist is based on these events.
Although the Gospel of John does not include a description of the bread-and-wine ritual during the Last Supper, most scholars agree that (the Bread of Life Discourse) has a eucharistic character and resonates with the institution narratives in the Synoptic Gospels and in the Pauline writings on the Last Supper.
In all four gospels, Jesus predicts that Peter will deny knowledge of him three times before the rooster crows the next morning.
In Luke and John, the prediction is made during the Supper (, ).
In Matthew and Mark, the prediction is made after the Supper, and Jesus also predicts that all his disciples will desert him (, ).
The Gospel of John provides the only account of Jesus washing his disciples' feet before the meal.
John also includes a long sermon by Jesus, preparing his disciples (now without Judas) for his departure.
of the Gospel of John are known as the Farewell Discourse and are a significant source of Christological content. 
The Last Supper is to be the subject of an animation by British film-maker Peter Greenaway, who plans to project interpretative images onto its surface to enliven the scene in which the apostles all question Jesus' statement that one of them will betray him. 
The film is framed as a group of performers who travel to the desert to re-enact the Christ Passion.
The film begins with them arriving on a bus, assembling their props, and getting into costume.
One of the group is surrounded by the others, puts on a white robe, and emerges as Jesus Christ.
The story begins with Judas, who is worried about Jesus' popularity.
He is being hailed as a God, but Judas feels he is just a man, and fears the consequences of their growing movement ("Heaven on Their Minds").
The other disciples badger Jesus for information about his plans for the future, but Jesus will not give them any ("What's the Buzz?").
Judas' arrival and subsequent declaration that Jesus should not associate with Mary dampens the mood.
Angrily, Jesus tells Judas that he should leave Mary alone, because his slate is not clean.
He then accuses all the apostles of not caring about him ("Strange Thing Mystifying").
Caiaphas is worried that the people will crown Jesus King, which will upset the Romans.
Annas tries to calm him, but he finally sees Caiaphas' point, and suggests that he convene the council and explain his fears to them.
Caiaphas agrees ("Then We Are Decided").
Judas later says that the money spent on ointment should have been given to the poor.
Jesus rebukes him again, telling him that the poor will be there always, but Jesus will not ("Everything's Alright").
Meanwhile, the council of the Priests discuss their fears about Jesus.
Caiaphas tells them that there is only one solution: like John the Baptist, Jesus must be executed for the sake of the nation ("This Jesus Must Die").
Jesus and his followers joyfully arrive in Jerusalem, but Caiaphas orders Jesus to disband the crowd for fear of a riot.
Jesus refuses and speaks to the crowd ("Hosanna").
Later, the apostle Simon Zealotes, and a crowd of followers, voice their admiration for Jesus ("Simon Zealotes").
Jesus appreciates this, but becomes worried when Simon suggests directing the crowd towards an uprising against their Roman occupiers.
Jesus sadly dismisses this suggestion, saying that they do not understand his true purpose ("Poor Jerusalem").
Pilate, the Roman governor of Judea, reveals that he has dreamed about a Galilean man (Jesus) and that he will be blamed for this man's death ("Pilate's Dream").
Jesus and his followers arrive at the temple, which has been taken over by money changers and prostitutes.
To Judas' horror and as the priests watch in the background, a furious Jesus destroys the stalls and forces them to leave.
Jesus wanders alone outside the city, but is confronted by a crowd of lepers, all wanting to be healed.
Jesus tries to heal as many of them as possible, but is overwhelmed by the sheer numbers and eventually gives up, screaming at them to leave him alone ("The Temple").
Mary comforts Jesus and Jesus goes to sleep.
Mary loves Jesus, but is worried because he is so unlike any other man she has met ("I Don't Know How to Love Him").
Judas goes to the Priests and expresses his concerns, but he is worried about the consequences of betraying Jesus ("Damned for All Time").
The Priests take advantage of his doubts, and offer him money if he will lead them to Jesus.
Judas initially refuses, but Caiaphas wins him over by reminding him that he could use the money to help the poor ("Blood Money").
At the Last Supper, Jesus reveals that he knows Peter will deny him and Judas will betray him.
A bitter argument between Jesus and Judas ensues, in which Judas asks what if he ruined Jesus' ambition and stayed there without helping him to reach the Glory.
Judas leaves ("The Last Supper").
As the apostles fall asleep, Jesus goes to Gethsemane to pray about his imminent death ("Gethsemane (I Only Want to Say)").
Jesus waits for Judas, who arrives and betrays him with a kiss, accompanied by guards.
The disciples offer to fight the guards, but Jesus will not allow it.
Jesus is taken to the High Priest's House, found guilty of blasphemy, and sent to Pilate ("The Arrest").
Peter, meanwhile, fearfully denies Jesus three times after being accused of being one of Jesus' followers ("Peter's Denial").
Jesus is taken to Pilate's house, where the governor, unaware that Jesus is the man from his dream, mocks him.
Since he does not deal with Jews, Pilate sends him to Herod ("Pilate and Christ").
The flamboyant King Herod (Josh Mostel) is excited to finally meet Jesus, for he has heard the hype.
He tries to persuade Jesus to perform various miracles.
When Jesus refuses to answer, Herod orders the guards to remove him ("Herod's Song (Try It and See)").
The apostles and Mary Magdalene remember how things began, and wish they hadn't gotten so out of hand ("Could We Start Again Please?
Jesus is flung into a cell, where he is seen by Judas, who runs to tell the priests that he regrets his part in the arrest.
He hurls his money to the ground and curses at the priests before running into the desert.
Filled with regret for betraying Jesus, he blames God for his woes for giving him the role of the traitor and hangs himself ("Judas' Death").
Jesus is taken back to Pilate, who questions him.
Pilate realizes that, although he thinks Jesus is mad, he has committed no crime.
Pilate's bemused indifference turns to a frenzy of confusion and anger, both at the crowd's irrational bloodthirstiness and Jesus' inexplicable resignation.
Pilate realizes he has no option but to kill Jesus, or the masses will grow violent ("Trial Before Pilate (Including the Thirty-Nine Lashes)").
After Pilate washes his hands of Jesus' fate, Jesus' appearance transforms, the heavens open, and a white-jumpsuit clad Judas descends on a silver cross.
Judas laments that if Jesus had returned as the Messiah today, he would have been more popular and his message easier to spread.
Judas also wonders what Jesus thinks of other religions' prophets.
He ultimately wants to know if Jesus thinks he is who they say he is ("Superstar").
Judas' questions go unanswered, and Jesus is sent to die ("The Crucifixion"), with ominous, atonal music, with Jesus saying some of his final words before dying.
As the film ends, the performers, out of costume, board their bus and drive away but Jesus is notably absent.
The final shot of the film shows the empty cross against a setting sun, as a shepherd and his flock cross the hillside.