Luke 9:29-31 And while He was praying, the appearance of His face became different, and His clothing became white and gleaming. And behold, two men were talking with Him; and they were Moses and Elijah, who appearing in glory, were speaking of His departure which He was about to accomplish at Jerusalem.
Jesus took Peter, John and James with Him up on a mountain to pray. They probably thought that prayer was all they would experience. But they got far more than a quiet time of prayer...they got front row seats for a Heavenly production. Suddenly, all the teachings of Jesus and the prophets took on a greater reality. Two characters who were prominent in the past, Moses and Elijah, showed up in glorified form...proving there is life after death. They dsplayed that there is purpose in Heaven as they had a consultation with Jesus. They reinforced that there is a master plan as they discussed Jesus' final drama of death and resurrection to take place in Jerusalem. This "window into Heaven" may have helped the three disciples realize that the greater reality is that Heaven has a "picture window" of us at all times. The reality of Heaven, eternity, life forever, God the Father and the Master Plan all came together on that mountain top. Certainly they had a new perspective on life as a result. As we walk with feet on earth we, too, can have minds on Heaven and hearts that are changed. We may think of the Lord with a fraction of our attention but He thinks on us continually.
Luke 9:35 Then a voice came out of the cloud, saying, "This is My Son, My Chosen One; listen to Him!"