The crowd chose to have Barabbas freed and Jesus crucified. Pilate washed his hands to indicate that he was innocent of the injustice of the decision (Matthew 27:11?26)...

They arrested him. Jesus was brought to Pilate and he sentenced him to death. Then he was crucified. When he died, a man named Joseph of Arimathea asked Pilate for the body of Jesus and he replied yes...

As for Pilate, it seems he did his part because the crowd was calling for it. They traded Jesus for a convicted murderer named Barabbas (gospel of John)...

Judas became the scapegoat for all of humanity's sin and Jesus became the savior for all of humanity's sin. The next question is raise is if Jesus suffered only on the cross, and then ascended to heaven, but yet Judas suffers an eternity in the fires of Hell, why does Judas have to suffer more for the sins of humanity? If Jesus was the savior for humanity, and had to suffer for billions of people's past and present sins, why does he only have to suffer for three days and Judas has to spend the rest of eternity in hell? If that were case and one were to see the symbiotic relationship between Jesus' death and Judas' death, then one could deduct that in reality Judas had a more important role in the salvation of humanity than Jesus...