Acts 4:8-10, 13

Then Peter, filled with the Holy Spirit, said to them, “Rulers and elders of the people, if we are on trial today for a benefit done to a sick man, as to how this man has been made well, let it be known to all of you and to all the people of Israel, that by the name of Jesus Christ the Nazarene, whom you crucified, whom God raised from the dead—by this name this man stands here before you in good health.

Now as they observed the confidence of Peter and John and understood that they were uneducated and untrained men, they were amazed, and began to recognize them as having been with Jesus.