Paul was appearing before the Sanhedrin, a council of Temple leaders/priests. Paul began his message declaring his clear conscience, when he was wrong he repented and when he was right he kept on track.
Paul had been miraculously delivered from jail cells before; but this time, the Lord met him right in the jail cell. Jesus was not only with Paul; He gave him words of comfort. Jesus was there to cheer His faithful servant after he had spent himself for Jesus’ sake.