A model for true repentance is given to us by the Prophet Isaiah who incites the Jews to repent and return to God. This is what he says: “Wash you, be clean; remove your iniquities from you souls before mine eyes; cease from your iniquities; learn to do well; diligently seek judgment, deliver him that is suffering wrong, plead for the orphan, and obtain justice for the widow. And come, let us reason together, saith the Lord: and though your sins be as purple, I will make them white as snow; and though they be as scarlet, I will make them white as wool” (Isa. 1:16-18).
From Repentance and Confession by Saint Nektarios, Bishop of Pentapolis, translated and published by Saint Nektarios Greek Orthodox Monastery, Roscoe, NY