The Apostles in Jerusalem sent him with Barnabas and Paul to Antioch, Syria and Cilicia to declare the decisions of the Council (Acts 15:22). He was a prophet (Acts 15:22 & 23). He had the Roman citizenship. He was a fellow for St. Paul in his second ministry trip after Barnabas had left him (Acts 15:40, 15:18-22). He followed St Paul in Macedonia and Philippi (Acts 16:12-39) where they suffered persecution and imprisoned there and the Lord freed them and so the Philippian Jailer believed (Acts 16:25-34). He followed St. Paul to Thessalonica then to Athens (Acts 17:13-15), and Corinth (Acts 18:5). He was martyred in Macedonia.