In Acts 4, Peter and John are addressing the Sanhedrin(kind of like the Jewish Religious Senate and Supreme Court). They were sharing their faith, healing folks and talking about the resurrection from the dead. Because of their teaching about 5000 people had converted. It was rocking the world! It wasn't long till the religious court wanted to know how all of this was happening....what's the secret? Where is the power coming from. That's when the Holy Spirit consumed Peter and he boldly laid it all out clearly and precisely.
When they heard Peter and John speak and saw their boldness, they perceived that they were uneducated and untrained, yet they marveled. Imagine that...they had no religious education...they were layman! But the courts could tell that they had been with Jesus. And then in Acts 4:14 it says, "and seeing the man who had been healed standing with them, they could say nothing against it."
The lesson is this...people can argue and criticize our words as we try to explain God's power but they will have nothing to say when the wonders of God come forth. The proof is in the end result...what we say is important and we need to be bold. But what we must do is show people the love and power of our risen Savior.
So do you really want to make a point? Go beyond the declaration and into the demonstration!