Spem in alium
Written by Thomas Tallis, sung here by the Tallis Scholars.
Spem in alium numquam habui praeter in te Deus Israel qui irasceris et propitius eris et omnia peccata hominum in tribulatione dimittis Domine Deus Creator coeli et terrae respice humilitatem nostram.
I have never put my hope in any other but in you, O God of Israel, who can show both anger and graciousness, and who absolves all the sins of suffering man. Lord God, Creator of Heaven and Earth, be mindful of our humiliation.
To an unknown God 
What is prayer? « To an unknown God said
[…] prayers don’t ask for things. The Spem in alium prayer doesn’t ask: Spem in alium numquam habui praeter in te Deus Israel qui irasceris et […]