The Lord came to send fire upon the earth (cf. Lk. 12:49), and through participation in this fire He makes divine not just the human substance which He assumed for our sake, but every person who is found worthy of communion with Him.
Even when your body does nothing, sin can be active in your mind. When your soul inwardly repulses the evil one's attack by means of prayer, attention, remembrance of death, godly sorrow and mourning the body, too, takes its share of holiness, having acquired freedom from evil actions. This is what the Lord meant by saying that someone who cleans the outside of the cup has not cleansed it inside, but clean the inside and the whole cup will be clean
... the passion for popularity brings such injury upon those it masters that it shipwrecks faith itself. Our Lord confirms this when He says, 'How can you have faith in Me when you receive honour from one another and do not seek for the honour that comes from the only God?' (cf. Jn. 5:44).