Be ashamed when you sin, don't be ashamed when you repent [To repent means to have a change of heart and mind. It is not simply a feeling of sorrow ,but a psycho/spiritual growth away from evil/death and a turning to God/life]. Sin is the wound, repentance is the medicine. Sin is followed by shame; repentance is followed by boldness [ Boldness means to beg God for undeserved mercy]. Satan has overturned this order and given boldness to sin and shame to repentance.
Saint John ChrysostomYou [Jews] did slay Christ, you did lift violent hands against the Master, you did spill his precious blood. This is why you have no chance for atonement, excuse, or defense.
Saint John Chrysostom