The religious teachers taught that Moses and Elijah would come to earth to announce the coming of the Messiah. These were the two greatest prophets of their religion. But God the Father is displeased when Peter wants to build places of rest for Jesus, Moses, and Elijah. God hides the scene from view and his voice is heard from heaven pointing to His beloved Son, and commanding all to listen only to Him. And then, when the three disciples recovered, Moses and Elijah were gone. They saw Jesus only.