Acts 11:15 "Well, I began telling them the Good News, but just as I was getting started, the Holy Spirit fell on them, just as he fell on us at the beginning....."
Here Peter was in Cornelius' house. Everyone there had been waiting for Peter to arrive. They were waiting to hear the Word of God from Peter. Before Peter got into the Word, he shared with them his personal testimony of how God had spoken to him in a vision. Peter's personal testimony was enough. He barely got started sharing the Good News and the Spirit of God came upon those gathered and overpowered them.
I wonder what it would have been like to be in a service like that. The people were ready and waiting to hear from God. They were focused on the message and not the messenger. They did not want to be entertained, they wanted to hear from God. I wonder what would be different in our churches today if everyone were to be as anxious to hear from God as Cornelius and his family were?
Sometimes our personal testimony is enough. Peter did not wow the people with his knowledge or understanding. He just told them about his encounter with Jesus. Knowledge and understanding are important, but sometimes we let them get in the way of our worship. God doesn't need what we know to do what He desires to do in someone's life. He just needs us to be willing to be real about what God has done for us. We need to be careful that we don't allow our minds to crowd out our hearts when we talk about Jesus. I fear that in so many cases, we speak from our heads and not our hearts.
If you want to see God in action, let him first move through your heart.