Through my fault

Tour of the Old Mass
http://www.catholic-pages.com/mass/oldmass.asp

...

I confess to Almighty God, to Blessed Mary Ever Virgin, to Blessed Michael the Archangel, to Blessed John the Baptist, to the Holy Apostles Peter and Paul, to all the saints, and to you, brothers, that I have sinned exceedingly in thought, word, deed: through my fault, through my fault, through my most grievous fault, and I ask Blessed Mary Ever Virgin, Blessed Michael the Archangel, Blessed John the Baptist, the Holy Apostles Peter and Paul, all the Saints, and you brothers, to pray for me to the Lord our God.

...