The goal of noetic prayer is to unite God with man, to bring Christ into man’s heart, banishing the devil from there and destroying all the work that he has accomplished there through sin. For, as the beloved disciple says, “For this purpose the Son of God was manifested, that He might destroy the works of the devil” (1 Jn. 3:8 ). Only the devil knows the inexpressible power of these seven words of the Jesus prayer, and this is why he wars and fights against the prayer with furious rage. Countless times the demons have confessed through the mouths of possessed people that they are burned by the action of the prayer.
Elder Ephraim of Arizona