Now after six days Jesus took Peter, James, and John his brother, led them up on a high mountain by themselves;
and He was transfigured before them. His face shone like the sun, and His clothes became as white as the light.
And behold, Moses and Elijah appeared to them, talking with Him.
Then Peter answered and said to Jesus, "Lord, it is good for us to be here; if You wish, let us make here three tabernacles: one for You, one for Moses, and one for Elijah."
References for Matthew 17:4
While he was still speaking, behold, a bright cloud overshadowed them; and suddenly a voice came out of the cloud, saying, "This is My beloved Son, in whom I am well pleased. Hear Him!"