If a man has tar on his hands, he removes it with a little cleansing oil; how much more, then, can you be made clean with the oil of God’s mercy. You find no difficulty in washing your clothes; how much easier is it for the Lord to cleanse you from every stain, although you are bound to be tempted every day. When you say to the Lord, ‘I have sinned’, He answers: ‘Your sins are forgiven you; I am He who wipes them out and I will remember them no more’(Matt. 9:2; Isa.43:25); ‘as far as the east is from the west, so far have I removed your sins from you; and as a father shows compassion to his sons, so will I show compassion to you’ (Ps.103:12-13).
–Saint John of Karpathos (Seventh Century)