The Te Deum is an ancient hymn of praise and thanksgiving, traditionally sung at the end of the Office of Readings on Sundays, solemnities, and special occasions of thanksgiving.
English
You are God: we praise you;
You are the Lord: we acclaim you;
You are the eternal Father:
All creation worships you.
To you all angels, all the powers of heaven,
Cherubim and Seraphim, sing in endless praise:
Holy, holy, holy, Lord, God of power and might,
heaven and earth are full of your glory.
The glorious company of apostles praise you.
The noble fellowship of prophets praise you.
The white-robed army of martyrs praise you.
Throughout the world the holy Church acclaims you:
Father, of majesty unbounded,
your true and only Son, worthy of all worship,
and the Holy Spirit, advocate and guide.
You, Christ, are the King of glory,
the eternal Son of the Father.
Come then, Lord, and help your people,
bought with the price of your own blood,
and bring us with your saints
to glory everlasting.
Origin: An ancient Latin hymn dating to the 4th century, traditionally attributed to Sts. Ambrose and Augustine.