The goal of a physician is not to avenge himself but to draw us towards himself. A physician is neither offended nor upset by the insults of the sick who rave in delirium and leaves no stone unturned in his efforts to prevent them from demeaning themselves, considering not his personal gain, but theirs. If they regain but a bit of their good sense and their calm, his heart is filled with satisfaction and joy; he increases his care and remedies. Far from taking vengeance on their insults, he adds kindness to kindness until he succeeds in restoring them to health. So too, when we have fallen into utter madness, God–without thinking of avenging the past–says and does nothing that would not aim at healing us of our illness.
~St John Chrysostom
Prayerful Life 