This hymn is used for Vespers I on the Feast of the Transfiguration of the Lord in the Sarum Breviary.
This is the text as it appears in Hymns Ancient and Modern (1867):
O wondrous type, O vision fair*
Of Glory that the Church shall share,
Which Christ upon the mountain shows,
Where brighter than the sun He glows!
From age to age the tale declare,
How with the three disciples there,
Where Moses and Elias meet,
The Lord holds Converse high and sweet.
The Law and Prophets there have place,
Two chosen witnesses of Grace;
The Father’s Voice from out the cloud
Proclaims His Only Son aloud.
With shining Face and bright array,
Christ deigns to manifest to-day
What Glory shall be theirs above,
Who joy in God with perfect Love.
And faithful hearts are raised on high
By this great vision’s mystery,
For which in joyful strains we raise
The voice of prayer, the hymn of praise.
O Father, with the Eternal Son,
And Holy Spirit, ever One,
Vouchsafe to bring us by Thy Grace
To see Thy Glory face to face. Amen.
Words: Sarum Breviary, 15th C.; tr. John Mason Neale, 1851.
Tune: “Wareham” William Knapp, 1738.
*originally: A type of those bright rays on high
The original Latin text of this hymn may be found here.