What does Acts 8:1 mean?
Stephen, the Christ-following deacon, has become the first Christian martyr. During his murder, the mob laid their coats at the feet of a young Pharisee named Saul (Acts 7:57–60). Luke makes sure to emphasize that Saul approves of the death (Acts 26:10).Saul is the man we will come to know as the apostle Paul (Acts 13:9). The first part of this verse needs to be taken into context. Luke is describing to his friend Theophilus (Acts 1:1) the history of the church between the ascension of Jesus into heaven and Paul's first imprisonment in Rome (Acts 28). Theophilus already knows something of Paul, and most of Luke's story focuses in on him. Now, Luke puts Paul in the context of the early church in Jerusalem led by the twelve apostles. Saul is Paul's Hebrew name. He approves of the persecution of the church and the murder of its members.
The specific inclusion of those considered "all" is unclear; Acts 8:4 seems to indicate not all the Jesus-followers left Jerusalem. The apostles stayed, as did, presumably, Jesus' brother James (Acts 15:13). "All" may be the deacons (Acts 6:1–6), including Philip (Acts 8:5), or those who were associated with Stephen in some other way. It could be that as Saul and the Freedmen seemed to be the influence behind the persecution, the target was the Hellenistic Jews. That would explain Philip the Evangelist's departure and settlement outside of Jerusalem (Acts 21:8).
Apostle is from the Greek root word apostolos. It refers to someone sent out as a delegate or messenger. Although the term is used broadly of evangelists in the New Testament, such as Barnabas and Paul (Acts 14:14), it mostly refers to the twelve disciples including Judas' replacement, Matthias (Acts 1:23–26).