Act of Contrition (Catholic Prayer)
Forgive me my sins, O Lord, forgive me my sins; the sins of my youth, the sins of my age, the sins of my soul, the sins of my body, my idle sins, my serious voluntary sins, the sins I know, the sins I do not know; the sins I have concealed so long, and which are now hidden from my memory. I am truly sorry for every sin, mortal and venial, for all the sins of my childhood up to the present hour. I know my sins have wounded Thy Tender Heart, O my Savior. Let me be freed from the bonds of evil through Thy most bitter Passion, O my Redeemer. O my Jesus, forget and forgive what I have been.
Act of Contrition
HAVE mercy upon me, O God, according to Thy great mercy: and according to the multitude of Thy tender mercies blot out my iniquity. O who will give water to my head, and a fountain of tears to my eyes, that, day and night, I may bewail my sins? O that I had never offended so good a God! O that I had never sinned! Happy those souls that have always preserved their baptismal innocence!
Lord, be merciful to me a sinner; Holy Jesus, Son of the Living God, have mercy upon me.
Act of Contrition (Actus Contritionis)
O my God, I am heartily sorry for having offended Thee and I detest all my sins because of Thy just punishments, but most of all because they offend Thee, my God, who art all good and deserving of all my love. I firmly resolve, with the help of Thy grace, to sin no more and avoid the near occasions of sin.
Deus meus, ex toto corde paenitet me omnium meorum peccatorum, eaque detestor, quia peccando, non solum poenas a Te iuste statutas promeritus sum, sed praesertim quia offendi Te, summum bonum, ac dignum qui super omnia diligaris. Ideo firmiter propono, adiuvante gratia Tua, de cetero me non peccaturum peccandique occasiones proximas fugiturum.