An internet search (Bing, GOOGLE) on
Transfiguration "Speed of Light"
provides some major points to ponder.
The light from the rarefied high ground
reveals this 4th Mystery of Light
as "a breakthrough"
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The Transfiguration seems to be a preview of Jesus as he comes in the body of his resurrection from the dead. At the same time, the Transfiguration isn’t just a preview. It’s also a flashback to previous stages in God’s dealings with his people. Two other mysterious figures appear “in glorious splendor,” as Luke says, conversing with Jesus — the Old Testament leaders Moses and Elijah. Luke tells us they spoke with Jesus "of his departure, which he was to accomplish at Jerusalem" (Luke 9:31).
Perhaps the Transfiguration is a window into reality above the “light line,” as Kenneth Copeland calls it. In that window the disciples were given a glimpse of time to come and time past — both a “preview” and a “flashback” that partially revealed to them God’s purpose in Jesus Christ. Jesus is manifested in his resurrection body, while at the same time he discusses with two pivotal figures from Old Testament history what will happen to him when he reaches Jerusalem. In his appearance on the earth, the Word of God took human form. But on the cross he will begin to take his departure, his return to the Father (as he explains in John’s Gospel: “I go to the Father, and you will see me no more” (John 16:10).
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One of my older posts made the list:
Sincerely yours in Jesus and Mary,
Become like Jesus
Live for the Triune God
Seek the Light of Our Lord Jesus Christ
See you on the High Ground!
* - J.M.J. + O.B.T. + M.G.R. stands for:
Jesus, Mary and Joseph;
O Beata Trinitas;
St. Michael, St. Gabriel and St. Raphael