New Defender's Study Bible Notes
9:1 an apostle. Evidently a key requirement for the apostolic office was that of having been directly chosen and called by Jesus Christ in person, as Paul had been on the road to Damascus (Acts 9:3-6,15-16). Note also the requisites for choosing a successor to Judas (Acts 1:21-22), indicating they also must have witnessed the resurrected Christ. Thus, no true apostles are living today.