Luke 9:32-36

32Now 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.

33And 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.

34But even as he was saying this, a cloud formed and began to overshadow them; and they were [greatly] afraid as they entered the cloud.

35Then a voice came out of the cloud, saying, “This is My beloved Son, My Chosen One; listen and obey and yield to Him!”

36When 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].