Mark 9:2-5

Now after six days Jesus took Peter, James, and John, and led them up on a high mountain apart by themselves; and He was transfigured before them. His clothes became shining, exceedingly white, like snow, such as no launderer on earth can whiten them. And Elijah appeared to them with Moses, and they were talking with Jesus. Then Peter answered and said to Jesus, “Rabbi, it is good for us to be here; and let us make three tabernacles: one for You, one for Moses, and one for Elijah”