44 But again; through the forgiveness of the two debtors, our Lord led into forgiveness him who was in need of forgiveness, yet in whose eyes the forgiveness of debts was hateful. For though the debts of the Pharisee himself needed forgiveness, yet the forgiveness of the debts of the sinful woman was hateful in his eyes. For had there been this forgiveness of debts in the mind of the Pharisee, it would not have been in his eyes disgraceful that that sinful woman should have come for forgiveness of her debts to God and not to the priests; for the priests could not forgive sins such as those.
But this sinful woman from the glorious works which our Lord did, believed that He could also forgive sins. For she knew that whoso is able to restore the members of the body, is able also to cleanse away the spots of the soul. But the Pharisee, though he was a teacher, did not know this. For the teachers of Israel were wont to be fools, put to shame by the despised and vile. For they were put to shame by that blind man to whom they said— We know that this man is a sinner. But he said to them:— How did He open my eyes? Lo! God hears not sinners. These are the blind teachers who were made guides to others; and their perverse path was made straight by a blind man.
Source: On Our Lord (New Advent)