Confiteor

Kyrie eleison.
Christe eleison.
Kyrie eleison.

or

Confiteor Deo omnipotenti, beatae Mariae semper Virgini, beato Michaeli Archangelo, beato Ioanni Baptistae, sanctis Apostolis Petro et Paulo, et omnibus Sanctis, quia peccavi nimis cogitatione, verbo et opere: mea culpa, mea culpa, mea maxima culpa. Ideo precor beatam Mariam semper Virginem, beatum Michaelem Archangelum, beatum Ioannem Baptistam, sanctos Apostolos Petrum et Paulum, et omnes Sanctos, orare pro me ad Dominum Deum nostrum. Amen.

[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, and to all the saints that I have sinned exceedingly in thought, word, and deed, through my fault, through my fault, through my most grievous fault. Therefore, I beseech blessed Mary ever Virgin, blessed Michael the Archangel, blessed John the Baptist, the holy apostles Peter and Paul, and all the saints, to pray for me to the Lord our God. Amen.]

or

I confess to almighty God and to you, my brothers and sisters, that I have greatly sinned, in my thoughts and in my words, in what I have done and in what I have failed to do, through my fault, through my fault, through my most grievous fault; therefore I ask blessed Mary ever-Virgin, all the Angels and Saints, and you, my brothers and sisters, to pray for me to the Lord our God.

or

Almighty God, Father of our Lord Jesus Christ, Maker of all things, Judge of all men; we acknowledge and bewail our manifold sins and wickedness, which we, from time to time, most grievously have committed, By thought, word, and deed, against thy Divine Majesty, provoking most justly thy wrath and indignation against us. We do earnestly repent, and are heartily sorry for these our misdoings, the remembrance of them is grievous unto us; the burden of them is intolerable. Have mercy upon us, have mercy upon us, most merciful Father; for thy Son our Lord Jesus Christ’s sake, forgive us all that is past; and grant that we may ever hereafter serve and please thee In newness of life, to the honor and glory of thy Name; through Jesus Christ our Lord. Amen.