TU TRINITATIS UNITAS

By Charles Coffin. ([69]See p. 3.) It is a recast of the Nunc nobis, Sancte Spiritus of St. Ambrose.

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O Holy Spirit, font of love,
Thou source of life, and joy, and peace,
With holy fire come from above,
And bid our hearts their warmth increase.
O Thou who didst with love's strong cord
Unite the Father and the Son,
May we who love a common Lord,
In mutual love be bound in one.
Now to the Father throned on high,
And unto Christ His only Son,
And to the Spirit, glory be,
Now, and while endless ages run.

A cento. Added to the Roman Breviary in 1568. In a subsequent edition it is the hymn for Lauds on Trinity Sunday. It is made up of the first stanza of a hymn with the same opening, and of the third stanza of the composition, Æterna coeli gloria, with a doxology added.

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O Thou Eternal One in Three,
Dread Ruler of the earth and sky,
Accept the praise we yield to Thee,
Who, waking, lift our songs on high.
The star that tells the approach of day
Is lingering in the glow of morn,
And night and darkness fade away--
O Holy Light, our souls adorn!
To God the Father throned in heaven,
To Christ the One Begotten Son,
And to the Spirit praise be given,
Now, and while endless ages run.