The Council teaches, furthermore, that though it sometimes happens that this contrition is perfect because of charity and reconciles man to God, before this sacrament is actually received, this reconciliation nevertheless must not be ascribed to the contrition itself without the desire of the sacrament which is included in it. That imperfect contrition [can. 5] which is called attrition, since it commonly arises either from the consideration of the baseness of sin or from fear of hell and its punishments, if it renounces the desire of sinning with the hope of pardon, the Synod declares, not only does not make a person a hypocrite and a greater sinner’ but is even a gift of God and an impulse of the Holy Spirit, not indeed as already dwelling in the penitent, but only maying him, assisted by which the penitent prepares a way for himself unto justice. And though without the sacrament of penance it cannotperselead the sinner to justification, nevertheless it does dispose him to obtain the grace of God in the sacrament of penance. For the Ninivites, struck in a salutary way by this fear in consequence of the preaching of Jonas which was full of terror, did penance and obtained mercy from the Lord [cf.Jonas 3]. For this reason, therefore, do some falsely accuse Catholic writers, as if they taught that the sacrament of penance confers grace without any pious endeavor on the part of those who receive it, a thing which the Church of God has never taught or pronounced. Moreover, they also falsely teach that contrition is extorted and forced, and that it is not free and voluntary [can. 5]
Can. 5. If anyone says that this contrition, which is evoked by examination, recollection, and hatred of sins “whereby one recalls his years in the bitterness of his soul” [ Isa. 38:15], by pondering on the gravity of one’s sins, the multitude, the baseness, the loss of eternal happiness, and the incurring of eternal damnation, together with the purpose of a better life, is not a true and a beneficial sorrow, and does not prepare for grace, but makes a man a hypocrite, and a greater sinner; finally that this sorrow is forced and not free and voluntary: let him be anathema