This is a hymn for Sunday Matins from the Octave of Pentecost to the September 28 in the Extraordinary Form. It is used for Office of Readings on Tuesday of Weeks II & IV in the Ordinary Form.
Father, we praise Thee, now the night is over;
Active and watchful, stand we all before Thee;
Singing, we offer, prayer and meditation;
Thus we adore Thee.
Monarch of all things, fit us for Thy mansions;
Banish our weakness, health and wholeness sending;
Bring us to Heaven, where Thy saints united
Joy without ending.
All holy Father, Son and equal Spirit,
Trinity blessèd, send us Thy salvation;
Thine is the glory, gleaming and resounding
Through all creation.
Words: Pope St. Gregory the Great (I), 6th Century; tr. Percy Dearmer, 1905.
Tune: “Christe Sanctorum” French hymn, Paris Antiphoner, 1681.
The original Latin text may be found here.