An excerpt from the book "THE PERSON IN THE ORTHODOX TRADITION" by Metropolitan Hierotheos of Nafpaktos
What has been said is needed in order for us to understand the limits of human freedom and also to understand how freedom, independence functions in the saints. As we shall see in what follows, the saint's independent will, precisely because he is favoured with divine grace, always moves naturally towards the good. When I speak of a saint I mean the deified person who partakes of God's deifying energy.
The Apostle Paul offers this witness: "It is no longer I who live, but Christ lives in me" (Gal. 2,11). He has the certainty that Christ lives in him, and so elsewhere too he says: "Imitate me, just as I also imitate Christ" (1 Cor. 11,1). St. Gregory Palamas, bearer of the same Revelation, interpreting this teaching of the Apostle, says: "Do you see clearly that grace is uncreated? Not only is such grace uncreated, but also the result of this sort of energy of God is uncreated; and the great Paul, no longer living the temporal life but the divine and eternal life of the indwelling word, came to be without beginning and without end by grace". And a little further on: "Paul was a created being until he lived the life which had come about by God's command; then he no longer lived this life but a life which had become indwelt by God, become uncreated by grace: and wholly possessing only the living and acting word of God".
In the Apostle's words and in the interpretation by St. Gregory Palamas, champion of the theologians, it is clear that a man who has been united with Christ, who has attained illumination and deification, by grace becomes uncreated and without beginning, because he has the living Christ within him.