Jesus had no formal relationship with the Sanhedrin. To the Sanhedrin Jesus was a problem His popularity with people, His miracles and His claims to authority made the religious officials in Jerusalem nervous; Jesus' approach to Sabbath practice, healings, exorcisms, and sinners ended up challenging the existing religious structure of Judaism.
So members of the Sanhedrin plotted to get rid of Jesus.
Matthew 26:59 Now the chief priests, the elders, and all the council sought false testimony against Jesus to put Him to death,
Yes, some believe it began in 76 BC and the last binding Sanhedrin was 358 AD. Jesus lived between 5/4 BC to 31 AD.
Because that is something that never happened. The complete lack of record of Jesus in the Talmud highlights that he was of no concern to the Sanhedrin.
Sanhedrin
to let water pass over the gills
No he was arrested by the Sanhedrin, a council of Jewish judges.
Blasphemy, which is not punishable by death during that time.
No! The sanhedrin didn't believe Jesus had ever came back to life, that's why they demanded that the Romans persecute the Christians because the Christians told everyone that Jesus had risen from the dead.
This was the like the church court. They wanted to find Jesus guilty
Caiaphas was not a member of the Sanhedrin but served as the high priest in Jerusalem during the time of Jesus. The Sanhedrin was the supreme council and tribunal of the Jews, and as high priest, Caiaphas played a significant role within it, particularly in the trial of Jesus. His position allowed him to influence the council's decisions and actions.
It means : a Pharisee and member of the Sanhedrin who became a secret follower of Jesus.
Nicodemus
Joseph Ciaiphas