Peter’s launched his presentation of the gospel on the first Pentecost by giving a biblical explanation for what God was doing right in front of their eyes.
but this is what was spoken of through the prophet Joel: 17 'AND IT SHALL BE IN THE LAST DAYS,' God says, 'THAT I WILL POUR FORTH OF MY SPIRIT ON ALL MANKIND; AND...Acts 2:16-17 (NASB)
Gymnasts performing the vault use a springboard to launch them into the air. We might be able to launch into a conversation about God by referring to something he has been doing recently of which we are aware. Many people do not know that God still acts in the lives of his people. If we can give a recent example, we might gain our listener’s attention and prick their interest to learn more.
It is one thing to read about miracles in the Bible and quite another to hear a first-hand account of something done by the Holy Spirit through one of us!
If we have the courage to pray for specific needs, we might generate a perfect example of this. Perhaps we do not see the Holy Spirit do more because we fail to ask! We should never be embarrassed or reticent to boldly ask God to do something specific to help our listeners, such as physical healing. He is more than willing to demonstrate that he loves people and that the gospel and Jesus are real. If we want to experience New Testament Christianity, we need to have the same kind of boldness and faith as the apostles.