Acts 2:14
"But Peter, standing up with the eleven, lifted up his voice, and said unto them, Ye men of Judaea, and all ye that dwell at Jerusalem, be this known unto you, and hearken to my words:"
There was something very different about the Apostle Peter in the verse above. Something changed in the life of Peter from this verse compared to previous verses. You find that Peter was previously dressed indecently while fishing. You can hear Peter cursing as he sat at the heathen's fire. You can see him sleeping when he should have been praying at the Garden of Gethsemane. You can hear Jesus rebuking Peter and telling Satan to get behind Him in a previous conversation. You can see Jesus rebuking Peter and the rest of the disciples for squabbling about who was the greatest.