This hymn is used for Lauds on the Feast of the Transfiguration in the Extraordinary Form of the Roman Breviary.
Light of the soul, O Saviour blest!
Soon as thy presence fills the breast,
Darkness and guilt are put to flight,
And all is sweetness and delight.
Son of the Father! Lord most high!
How glad is he who feels Thee nigh!
How sweet in Heav’n thy beam doth glow,
Denied to eye of flesh below!
O Light of Light celestial!
O Charity ineffable!
Come in thy hidden majesty;
Fill us with love, fill us with Thee.
To Jesus, from the proud conceal’d,
But evermore to babes reveal’d,
All glory with the Father be,
And Holy Ghost eternally.
Words: St. Bernard of Clairvaux, 12th C.; tr. Fr. Edward Caswall, C.O., 1849.
Tune: “Iesu Dulcis Memoria” Plainchant, traditional.
Hymns Ancient and Modern indicates that the following is Fr. Caswall’s translation of Amor Iesu Dulcissime, however it appears nowhere in the Lyra Catholica (1849), which translates from Lux Alma Iesu Mentium. I cannot find a copy of it in Fr. Caswall’s writings that I have available to me at present.
This is the text as it appears in Hymns Ancient and Modern (1867):
Jesu, Thy mercies are untold
Through each returning day;
Thy Love exceeds a thousandfold
Whatever we can say:
That Love which in thy Passion drained
For us Thy precious Blood.
That Love whereby the saints have gained
The vision of their God.
‘Tis Thou hast loved us from the womb,
Pure Source of all our bliss,
Our only Hope of Life to come,
Our Happiness in this.
Lord, grant us while on earth we stay
Thy Love to feel and know;
And, when from hence we pass away,
To us Thy Glory show. Amen.
Tune: “St. Fulbert“ Henry J. Gauntlett, 1849.
The original Latin text (Lux Alma Iesu Mentium) of this hymn may be found here.