Jesus led Peter, James, and John up a high mountain by themselves.
"And he was transfigured before them." What an experience for these three. Here was Jesus with Moses and Elijah. Jesus' face shone like the sun and his clothes became white as light. The three chosen friends are in awe. They hear a voice saying, "This is my Beloved Son with whom I am well pleased; listen to him."
They are afraid but Jesus says to them, "Rise, and do not be afraid."
And looking up they saw no one but Jesus.
I love this Gospel and think it was a tremendous moment for Jesus as well as for his chosen three to witness.