1. The Good News crosses cultures
Remember the tensions there were between the Jews and Samaritans? The Good Samaritan was originally meant to be a shock - a contradiction in terms to those hearing it! It was a controversial thing, therefore, for Philip to go and preach in Samaria. But as Jesus had said in Acts 1v8 - the good news would travel out as the believers were witnesses in Jerusalem, Judea and Samaria, and the ends of the earth. This then, is the next step on and out, just as Jesus said it would be. The gospel message was not just a Jewish thing. It is not a western man's thing as sometimes thought today. It's not bound by any one culture. It transcends culture. It's for all cultures.
2. The believers show courage in suffering
The whole reason why believers were going out into new areas was in reaction to a violent persecution that broke out after Stephen had been killed (chapter 7). The backdrop to this account was one of suffering.
And there was a different form of opposition in chapter 8 from Simon Magus, despite appearing to be one who wanted to follow Jesus - it turned out he was after power and influence as he had been before.
But the believers, including Philip in this account, were showing great courage and compassion and vision in going out. They loved Jesus more than they loved ease and comfort.
3. The Holy Spirit is essential
Even if the way the Holy Spirit came in Samaria wasn't typical, it is plain that it was unthinkable that the new believers could go forward without the Holy Spirit! The Spirit used Peter and John to officially authorise this new step as legit! The new believers received him as had happened at Jerusalem. The Spirit is Christ's presence in us and among us. He is our strength and guide and life. We need him in us and working through us or we are no more than a gang of friends. The Holy Spirit is Jesus showing up!
So for us?
Let's cross cultural boundaries
Let's be courageous
Let's call on the Spirit every step of the way