The moral of the story? Proverbs 28:13 He that covereth his sins shall not prosper: but whoso confesseth and forsaketh them shall have mercy.
YES this is the deal! Sometimes we might think and believe we are confessing and forsaking our sin and sometimes we make the same mistake as the Parisee's of ancient times by thinking and believing we are justified.
Their justification came by following the law or desiring to follow the law.Christians often feel justified because they feel they have a advocate yet they return to their own vomit like dogs as Peter mentioned in second Peter
In other words I can confess what I am as I am but not neccesarily have the will to do anything about it.It is as Paul said ;"I do what I should not do and do not do what I know I should.
The best we can do is to have the wish to change and even learn from our Pharisee friends..see their worth,their effort, their value and then beat our Chest saying from tthe bottom of our hearts
"Lord have Mercy on me A Sinner"