What is the role of the sanhedrin in palestine?

Answer 1

It was the supreme privy council among the Jews, at once a court of final appeals and last resort and an executive and legislative assembly. It consisted of 71 members and traces its history back to the time of Moses and almost every Jewish town had one.

Answer 2

They were the highest Jewish council in the first century. They exerted their authority in religious matters under the watchful eye of the Romans.