You may ask, “Is it possible for me to live the rest of my life away from sin, even though my heart loves it? If I were to repent of it, I would return to it.” The error in despair is that the devil makes us think that we will live in repentance with the same heart that loves sin. On the contrary, the Lord will give you a new heart (Ezekiel 36.26). He will remove from you the love of sin, and you will not think about returning to it. On the contrary, God will make you hate sin in your repentance and be disgusted by it. Your present feelings will change.

—H.H. Pope Shenouda III, The Life of Repentance and Purity