Jesus chose 
three disciples out of the 12 to accompany him to the mountain top. Each would later draw strength from this as their message of encouragement to others. Peter, the denier would later write: “we were eyewitnesses of His majesty.” And John would write: “we saw His glory, glory as of the only begotten from the Father…” James would draw strength as he faced the sword of Herod. God gives us these mountain top experiences as His powerful picture that the goal is not the cross but only its path to glory.
Why did Jesus reveal this to just three of his disciples? Perhaps because he knew that soon Peter would deny him; James would be beheaded, and John would be the one chosen to write the Revelation of the Transfigured Christ. Recently a precious friend left his earthly dwelling and now sits at the feet of Jesus. As I pondered this I considered this thought: Jesus’ Transfiguration has given each of us a glimpse into what awaits each believer at death which is comforting for those that are now grieving but also a picture of what we can become even now as we reach our mountain top with him.In addition, Paul gave us a glimpse of what will happen at death: 1Co 15:52 in a moment, in the blinking of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised imperishable, and we will be changed. Did you grab that thought? We will all be changed just as Jesus was changed on that mountain top and forever changed these men’s lives.
But until then we must return to the valley but are reminded that it is a process as Paul reflected: “And we all, with unveiled faces reflecting the glory of the Lord, are being transformed into the same image from one degree of glory to another,” And now the crux of the whole purpose! We return from the mountain top so that we may reflect God’s glory before the world that we inhabit day by day.
Only the transfigured Jesus has the power to change us from the inside out for He is the Messiah, and why we are to “listen to Him.”
PhotoCredit: christianity.about.com