By St. Nikolai Velimirovich
"The gentiles walk in the vanity of their mind, having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the hardness of their heart" (Ephesians 4:17-18).
What is vanity, my brethren? All that is seen outside God, cut off from God and done without the fear of God.
What is vanity of the mind, my brethren? To live and interpret life, not by God's law but rather by one's own passing thoughts and desires.
Whence, my brethren, does this evil come to men? From hardness of heart and from inner ignorance.
What does hardness of heart mean, brethren? It means a heart empty of love for God and fear of God, and filled with lustfulness and fear of everything for the body's sake.
Brethren, what is born of hardness of heart? Ignorance - complete ignorance of divine things, divine ways and divine laws; a heart completely dulled to spiritual life and spiritual thought.
What is the final consequence, brethren, of hardness of heart and ignorance of divine truth? A darkened understanding and alienation from the Living God.
Darkened understanding occurs when the mind of man becomes as darkened as the body, and the light that is in man becomes darkness. Oh, such a darkness! A darkened understanding is a darkened mind. A darkened mind knows the meaning of nothing, or denies the meaning of everything. In such a condition, a man is alienated from the life of God, and he withers and dies like a body part cut off from the body. Such are the pagans, such are the godless, and such are those of little faith or false Christians. But even dry wood, when it is watered with the life-creating water of Christ, comes to life and bursts forth in greenery. Even the dried-up pagan world was raised up and brought to life by Christ the Lord. How much more so would it be for repentant Christian sinners!
Let us look at ourselves, my brethren. Let us do so every day. Let us ask ourselves every day whether we have become darkened and alienated from the life of God because of our vanity. Soon there will be death, the end and judgment. The dry wood will be cast into the unquenchable fire.
O Lord Jesus, our Mind and our Life, help us to think with Thee, and to live with Thee. To Thee be glory and praise forever. Amen.