Jesus' Trial Before the Sanhedrin

When Jesus' trial before Caiaphas was over, He was not taken immediately to Pilate by the religious leaders. He was, instead, bound and put back in prison until daybreak when He was once again put on trial, but this time by the whole Sanhedrin. Why the delay and the extra trial? It has to do with rules and regulations which, even though they were breaking so many of them, the Sanhedrin members tried to make it look as though everything they did was right and legal.