Elder St. Porphyrios on Receiving the Light of Grace
“To those who are distrustful, who doubt and dispute and use only the faculty of reason and are not open to God, God does not show Himself. God does not enter locked souls; He does not force an entrance. On the contrary, to those who have a simple and steadfast faith, God shows Himself and bestows on them His uncreated light. He accords it to them abundantly in this life and very much more in the next. Do not imagine, however, that everyone here sees the light of truth with the same clarity. Each person sees according to the state of his soul, his spirit and his education. Everyone, for example, may see the same picture, but not everyone who sees it has the same emotions. This is also true of the divine light. The true light does not shine in all human hearts in the same way. Natural sunlight shines the same everywhere, but the rays of light do not penetrate far into a house that has dirty windows. The same happens with the uncreated light. If our windows are dirty and our heart is not pure then the blackness does not allow the rays to penetrate.”
– ‘Wounded by Love’