Luke 9:28-36

Now about eight days after these teachings, He took along Peter and John and James and went up on the mountain to pray. [Matt 17:1-8; Mark 9:2-8] As He was praying, the appearance of His face became different [actually transformed], and His clothing became white and flashing with the brilliance of lightning. And behold, two men were talking with Him; and they were Moses and Elijah, who appeared in glory, and were speaking of His departure [from earthly life], which He was about to bring to fulfillment at Jerusalem. Now Peter and those who were with him had been overcome with sleep; but when they were fully awake, they saw His glory and splendor and majesty, and the two men who were standing with Him. And as these [men, Moses and Elijah] were leaving Him, Peter said to Jesus, “Master, it is delightful and good for us to be here; we should make three [sacred] tents; one for You, one for Moses, and one for Elijah”—not realizing what he was saying. But even as he was saying this, a cloud formed and began to overshadow them; and they were [greatly] afraid as they entered the cloud. Then a voice came out of the cloud, saying, “This is My beloved Son, My Chosen One; listen and obey and yield to Him!” When the voice had ceased, Jesus was found there alone. And they kept silent, and told no one at that time any of the things which they had seen [concerning the divine manifestation]. [2 Pet 1:16-19]