Consors Paterni luminis.

O God from God, and Light from Light,
  Who art Thyself the day,
Our chants shall break the clouds of night;
  Be with us while we pray.

Chase Thou the gloom that haunts the mind,
  The thronging shades of hell,
The sloth and drowsiness that bind
  The senses with a spell.

Lord, to their sins indulgent be,
  Who, in this hour forlorn,
By faith in what they do not see,
  With songs prevent the morn.

Grant this, O Father, etc.