Being a disciple indicates that they were being taught. As they learned, they were traveling along the Way of Christ, and did not deviate from it. One impressive thing about them was that they were willing to be persecuted by others for their faith. Despite their terrible treatment, many were willing to be bound with chains and sent to far off cities for the name of Christ.
Paul's boldness was remarkable. He preached the Good News of Christ to Jews and gentiles alike, regardless of their economic or social standing. He taught the poor and rich, men and women, Jew and Gentile. He declared the resurrection of Jesus Christ to kings, and others in authority. All of which was without shame or embarrassment.