15:18 I will leave is this place and go to my father and say: Father, I have sinned against heaven and against you; 15:19 I no longer deserve to be called your son; treat me as one of your paid servants.” (St. Luke)
You are willfully or genuinely ignoring the condition of the man’s heart.
The prodigal son was not scheming and thinking about how to scam his father; he was actually moved to repentance. His intent was to fully reconcile himself to the father… and not just to claim “rights” of kinship.
God, of course, Knowing what is in our heart does not need but for us to Turn Back to Him. However, the Confession and Repentance cannot take place if all we do is pretend that 'we’re back!’