Six days later Jesus took Peter, James and John up a high mountain where they were alone, and in their presence he was transfigured. His clothes glistened with a dazzling whiteness such as no bleaching could give on earth. And there appeared to them Elijah and Moses, who talked with Jesus. Then Peter said, "Master, it is fortunate that we are here. Let us make three tabernacles, one for you, one for Moses, and one for Elijah." (For in his terror he did not know what to say.) Then a cloud came and overshadowed them, and a voice from the cloud said, "This is my Beloved Son; give heed to him." And suddenly, looking around, they saw no one with them but Jesus.
As they came down from the mountain, he commanded them to tell no one what they had seen until after he had risen from the dead. And they obeyed the command but discussed among themselves what "rising from the dead" meant. Therefore they asked him, "How is it that the scribes say, 'Elijah must first come'?" He answered, "Elijah is to come first to restore everything. And what is written about the Son of Man? Is it not that he is to endure great suffering and be despised? But I tell you, Elijah has come, and they have done to him what they pleased, even as it is written of him."