In this episode, we learn that we will be persecuted for our faith, maybe not stoned, but certainly laughed at and not taken seriously.
When we remind people of who Jesus is, it convicts them.
Once the gospel goes out, it will not return void, but it will save folk and it will create miracles in their lives.
Listening to the Spirit of God is so very important. Phillip hear from the Lord and he acted on it. The Ethiopian Eunuch would not have been saved, had it not been for the obedience of Phillip listening and obeying the Spirit.
We must do the same today. Act on His word, His power and His command.
The word will spread no other way, than you and I telling people about Him.