Veni Sancte Spiritus is the traditional Sequence sung on Pentecost Sunday and its octave. It is sometimes attributed to Stephen Langton, Archbishop of Canterbury. Here is a translation by J.M. Neale:
Come, Thou holy Paraclete,
And from Thy celestial seat
Send Thy light and brilliancy:
Father of the poor, draw near;
Giver of all gifts, be here;
Come, the soul’s true radiancy.
Come, of comforters the best,
Of the soul the sweetest guest,
Come in toil refreshingly:
Thou in labour rest most sweet,
Thou art shadow from the heat,
Comfort in adversity.
O Thou Light, most pure and blest,
Shine within the inmost breast
Of Thy faithful company.
Where Thou art not, man hath nought;
Every holy deed and thought
Comes from Thy divinity.
What is soilèd, make Thou pure;
What is wounded, work its cure;
What is parchèd, fructify;
What is rigid, gently bend;
What is frozen, warmly tend;
Strengthen what goes erringly.
Fill Thy faithful, who confide
In Thy power to guard and guide,
With Thy sevenfold mystery.
Here Thy grace and virtue send:
Grant salvation to the end,
And in Heav’n felicity.