But the believers who were scattered preached the Good News about Jesus wherever they went. Philip, for example, went to the city of Samaria and told the people there about the Messiah. Crowds listened intently to Philip because they were eager to hear his message and see the miraculous signs he did. Many evil[a] spirits were cast out, screaming as they left their victims. And many who had been paralyzed or lame were healed. So there was great joy in that city. Acts 8:4-8
You may have thought before, "Preaching is for preachers." But preaching simply means to publicly proclaim or teach. We all publicly proclaim and teach about many things, and we wouldn't necessarily call ourselves experts in those things. In the same way, Jesus has called all His followers to publicly proclaim (tell others) about what He has done in their lives and the lives of others in the church. We call this a testimony. A story about Jesus and how he transformed our lives from a lost and broken person, to someone who was now found by Him (because He loved us enough to look), made whole and brought into a brand new relationship with God. In our verse, the church was being persecuted (driven out and killed) for their devotion to Jesus. And most did the sensible thing, they scattered (left for different cities). But they didn't just scatter, it says that when they arrived to their destinations, they "preached" the Word about Jesus wherever they went. Those who were preaching weren't the disciples, but ordinary followers of Jesus with no special training or positions. They simply had a story to tell. Their stories may have went like this, "I was broken and stuck in sinful living, and Jesus showed me that He was the only one who could rescue me from my sinful life (doing things my way like Jesus didn't even exist). The penalty for living that way is eternity apart from Him in a place called hell. Then I confessed to Jesus who made me for a love relationship with Himself and said I am sorry, forgive me for hurting you and others by all the bad and selfish things I had done. He forgave me without a seconds delay and wrapped me into His love and made me part of His family!" This is similar to what the people of Samaria would have heard back then, and when they heard that message, were changed by it. The result from the Good News of Jesus being preached and His Power displayed was "Great joy in that city." The same will be true of us, if we will not be ashamed to "preach" about what Jesus has done in our lives and watch great joy come to those who choose to believe!