In Pt. 9 of Power & Persecution, we study the last story of Philip mentioned in Acts. We see his obedience to go where God sent him. In the first of Acts 8, we see him in Samaria having tremendous success preaching and baptizing multitudes.
All of a sudden at the end of Acts 8, God sends him to Gaza, a desert place to share the Gospel with one man.
We talk about Philips obedience to go (even to a desert place) and to go from sharing the gospel to multitudes to only one person.
There are many more lessons we learn from Philips life in the last sermon of chapter 8.