Acts 1:8 is the key verse of the book of Acts. In it, we see 1. The Purpose – The reason the church was left on earth was so that they all may witness of Jesus and His work. Even when they were persecuted, they went everywhere preaching the gospel. In fact, many were martyred for their preaching. But they were faithful to God’s purpose in Acts 1:8- they lived their lives around witnessing for Jesus. 2. The Power – The church had great boldness in preaching. There were great conviction and convincement amongst the people who heard the gospel. The church, therefore, grew in numbers under the power of the Holy Spirit. 3. The Plan – The gospel is for the whole world- not just the Jews. The gospel is powerful to save both Jews & Gentiles. And it is to move outwards centrifugally from Jerusalem to the ends of the earth. The light that shines the furthest shines brightest at home. May God help us all to be effective in soul-winning. Check out this link for the complete message and some practical tips for evangelism.