As excerpted from the OCA website.

Day 1

On the first day of the Afterfeast of the Transfiguration, the hymns of Vespers speak of the amazement of the Apostles when they saw Christ transfigured before them. The Savior’s equality with the Father is also stressed, for He who covers Himself with light as with a garment is now transfigured before His disciples, “shining more brightly than the sun.”

Day 2

The hymns at Vespers today speak of the sun appearing dim compared to the divine light of the Transfiguration. In His compassion for humanity, Christ took on mortal flesh, yet Peter, James and John saw the radiance of His glory. The incarnate Lord “made Adam’s darkened image to shine again” when He appeared on earth “arrayed in the original beauty of the Image (Genesis 1:26).

Day 3

The Church’s hymns today invite us to “ascend the holy mountain” and “with the eyes of faith,” to “behold the radiant Transfiguration of the Lord.” Christ has transformed our fallen human nature and restored its original beauty “by the burning radiance of His divinity.”

Day 4

The hymns of Vespers remind us that the Transfiguration is not merely a historical event, but something which also has implications for us. Those who “desire to see and hear things past understanding” must ascend from earthly concerns to “the height of the contemplation of the virtues.” This may be achieved by “directing our minds to heavenly things” and by “being formed anew in piety into the image of Christ.”

Day 5

The hymns of the fifth day of the Afterfeast of the Transfiguration invite us to acquire the virtues and become radiant so that we may stand upon the holy mountain and behold the Lord’s Transfiguration as He shines with glory, “filling the world with light.”

We are also assured that those who excel in virtue “shall be made worthy of divine glory.”

Day 6

Today’s hymns speak of how Christ made those who ascended Mt Tabor with Him “partakers of (His) otherworldly glory.” The Apostles, “overcome with fear, fell headlong upon the earth.”