“And when they heard that, they entered into the temple early in the morning, and taught. But the high priest came, and they that were with him, and called the council together, and all the senate of the children of Israel, and sent to the prison to have them brought.”
King James Version (KJV)
Ac 5:21 Called the council. The Sanhedrin, for the trial of the apostles, supposing them still in prison. All the senate. Many think that a body of elders and other influential leaders were called to assist in the deliberations.