Peter, James, and John were with Jesus on the Mt. of Transfiguration when Elijah and Moses appeared and Jesus was for a time transfigured from an earthly form into a supernatural one.  True to form though, Peter started to babble, putting a foot into his mouth…when God interrupted him saying, “This is My Son, whom I love; with Him I am well pleased.  Listen to Him!” (Matthew 17:5)  However, this mountain top experience changed Peter, James, and John forever. They were witnesses to the power and majesty, glory and honor of the Lord Jesus Christ…and this personal knowledge and experience changed who they were and how they shared the Gospel Message from that time on.