Sometimes people say that at Pentecost, God reversed the Tower of Babel, but that is exactly what He didn’t do. At Pentecost, God underlined the linguistic diversity that He introduced at Babel.
It was mission that gave them their sense of separate identity from their Jewish roots. The Church was born in Antioch, not Jerusalem.
The day of Pentecost opened up the door to the reality of a multi-ethnic, multi-lingual church, but it took a lot of struggle and argument before the believers saw that they needed to walk through the door.
The desire to force God to inspire the Bible in a way that our assumptions about the word are confirmed can be idolatrous.
You can't do mission without the Spirit and you can't claim to have the Spirit unless you are involved in mission.
Philip was a Hellenic Jew; that is he spoke Greek as his first language and probably hadn’t grown up in Palestine. He was a bit of an outsider.