While Christian tradition often refers to the apostles as being twelve in number, different gospel writers give different names for the same individual, and apostles mentioned in one gospel are not mentioned in others. There is also an Eastern Christian tradition derived from the Gospel of Luke of there having been as many as 70 apostles during the time of Jesus' ministry. Paul is often referred to as an apostle, because he was directly taught and commissioned by a vision of Christ (Acts 9:4–9) during his journey to Damascus. The commissioning of the Twelve Apostles during the ministry of Jesus is recorded in the Synoptic Gospels. After his resurrection, Jesus sent eleven of them (minus Judas Iscariot, who by then had died) by the Great Commission to spread his teachings to all nations. This event has been called the Dispersion of the Apostles.