“Sin, having deprived the wretched soul of all the supernatural blessings, strips it also of the natural ones, for it takes away the keenness of the mind, the light and discrimination of reason, the tenderness and perception of the heart, the peace of thoughts and of conscience, and the purity of all the powers. It even weakens the body and defiles the senses.” St. Nicodemos the Hagiorite
 Now this I affirm and testify in the Lord, that you must no longer live as the Gentiles do, in the futility of their minds;
 they are darkened in their understanding, alienated from the life of God because of the ignorance that is in them, due to their hardness of heart;
 they have become callous and have given themselves up to licentiousness, greedy to practice every kind of uncleanness.
 You did not so learn Christ! —
 assuming that you have heard about him and were taught in him, as the truth is in Jesus.
 Put off your old nature which belongs to your former manner of life and is corrupt through deceitful lusts,
 and be renewed in the spirit of your minds,
 and put on the new nature, created after the likeness of God in true righteousness and holiness.
 I appeal to you therefore, brethren, by the mercies of God, to present your bodies as a living sacrifice, holy and acceptable to God, which is your spiritual worship.
 Do not be conformed to this world but be transformed by the renewal of your mind, that you may prove what is the will of God, what is good and acceptable and perfect.
 For by the grace given to me I bid every one among you not to think of himself more highly than he ought to think, but to think with sober judgment, each according to the measure of faith which God has assigned him.