Council of Trent
Canon 12.
If anyone says that justifying faith is nothing else than confidence in divine mercy, which remits sins for Christ's sake, or that it is this confidence alone that justifies us, let him be anathema.
Canon 13.
If anyone says that in order to obtain the remission of sins it is necessary for every man to believe with certainty and without any hesitation arising from his own weakness and indisposition that his sins are forgiven him, let him be anathema.
Canon 14.
If anyone says that man is absolved from his sins and justified because he firmly believes that he is absolved and justified, or that no one is truly justified except him who believes himself justified, and that by this faith alone absolution and justification are effected, let him be anathema.