Feast of the Transfiguration

Transfiguration by Giovanni Gerolamo Savoldo, 16th century

Feast (1969 Calendar): August 6
Double of the II Class (1955 Calendar): August 6

Today is the celebration of the Feast of the Transfiguration when we recall Christ's divinity showing forth on Mount Tabor. This event foreshadowed the glorious Resurrection and Ascension of Christ that would occur after His death on the Cross. This is the beginning of a 40 day before until the Feast of the Holy Cross.

Jesus took Peter, James, and his brother John, and led them up a high mountain apart by themselves. And he was transfigured before them, and his clothes became dazzling white, such as no fuller on earth could bleach them. Then Elijah appeared to them along with Moses, and they were conversing with Jesus.Then Peter said to Jesus in reply, “Rabbi, it is good that we are here! Let us make three tents: one for you, one for Moses, and one for Elijah.” He hardly knew what to say, they were so terrified. Then a cloud came, casting a shadow over them; from the cloud came a voice, “This is my beloved Son. Listen to him.” Suddenly, looking around, they no longer saw anyone but Jesus alone with them. As they were coming down from the mountain, he charged them not to relate what they had seen to anyone, except when the Son of Man had risen from the dead. So they kept the matter to themselves, questioning what rising from the dead meant. Mark 9:2-10

Yet, the greatest mystery in this was not that Christ shone forth in glory. The true mystery is in that Christ kept that light and divinity hidden all during his earthly ministry to save our souls. The 4th Reading at Matins is from a sermon by St. Leo the Great who wrote:

The Lord taketh chosen witnesses, and in their presence, revealeth His glory. That form of body which He had in common with other men, He so transfigured with light, that His Face did shine as the sun, and His raiment became exceeding white as snow. Of this metamorphosis the chief work was to remove from the hearts of the disciples the stumbling at the Cross. Before their eyes was unveiled the splendour of His hidden majesty, that the lowliness of His freely-chosen suffering might not confound their faith. But none the less was there here laid by the Providence of God a solid foundation for the hope of the Holy Church, whereby the whole body of Christ should know with what a change it is yet to be honoured. The members of that body whose Head hath already been transfigured in light may promise themselves a share in His glory.

Before the changes to the Roman Missal in 1955, the Preface for the Nativity was used in Masses today. This changed to the common preface and was included as the preface in the 1962 Missal. The Preface for the Nativity though indicates the hidden reality we contemplate today:

It is truly meet and just, right and for our salvation, that we should at all times and in all places give thanks to Thee, holy Lord, Father almighty, eternal God: for through the Mystery of the Word made flesh, new radiance from Thy glory hath so shone on the eye of the soul that the recognition of our God made visible draweth us to love what is invisible. And therefore with Angels and Archangels, with Thrones and Dominations, and with all the host of the heavenly army we sing a hymn to Thy glory, evermore saying: Sanctus... 

The Transfiguration only became a feast of general observance in the mid-15th century. When it did, the Feast of Ss. Sixtus II and Companions, which was kept on August 6th, was reduced to a Commemoration.

Collect:

O God, Who in the glorious Transfiguration of Thine only-begotten Son didst confirm the mysteries of the faith by the witness of the fathers, and in the voice which came down from the shining cloud, didst wondrously foreshow the perfect adoption of sons: vouchsafe in Thy loving kindness, to make us coheirs with this King of glory, and to grant that we may be made partakers of that same glory. Through the same our Lord.

Prayer Source: 1962 Roman Catholic Daily Missal