O my God, I am heartily sorry for having offended You, and I detest all my sins because I dread the loss of Heaven and the pains of Hell, but most of all because they offend You, my God, Who are all good and deserving of all my love. I firmly resolve, with the help of Your grace, to confess my sins, to do penance, and to amend my life.
Amen.
Note: In the area of deliberate sexual sins listed below, all are mortal sins if there is sufficient reflection and full consent of the will. "No fornicators, idolaters, or adulterers, no sodomites,... will inherit the kingdom of God." (1 Cor 6:9-10) "Anyone who looks lustfully at a woman has already committed adultery with her in his thoughts." (Mt 5:28)
"O God, be merciful to me, a sinner." (Lk 18:13)
"Whose sins you shall forgive, they are forgiven..." (Jn 20:23)
"Though your sins be like scarlet, they shall become white as snow. Though they be red like crimson, they shall become white as wool." (Is 1:18)
"If we confess our sins, He who is upright can be depended upon to forgive sins, and to cleanse us from every wrong." (1 Jn 1:9)
"Father, forgive them; they do not know what they are doing." (Lk 23:24)
"Forgive us our sins, for we too forgive all who do us wrong." (Lk 11:4)