As written on the bible (Mt. 17:1-9), the Lord took his three disciples, Peter, James and John up on a high mountain, where He was transfigured before them. His face shone like the sun, and his clothes became as white as light. And behold, Moses and Elijah appeared to them talking to the Lord.
The Lord wants to teach us that He is the Lord of Moses whom he can raise from the dead, and that He is the God of Elijah whom He can bring back from heaven.
Saint Peter 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.” While peter was still speaking, behold a bright cloud overshadowed them. A voice came out the cloud saying, “This is my beloved Son, with whom I am well pleased; listen to him.” When they heard the voice, fell on their faces and were exceedingly afraid. Jesus came and touched them with His blessed hand, saying, “Rise, and have no fear.” And when they lifted up their eyes, they saw no one but the Lord Jesus alone.
As the prophet King David said on his psalm “Tabor and Hermon rejoice in your name” Mount Tabor is a similitude of the Church.
Glory to our Lord forever, Amen.