Sometimes nobody puts it like George MacDonald puts it:
It is to the man who is trying to live, to the man who is obedient to the word of the Master, that the word of the Master unfolds itself. When we understand the outside of things, we think we have them: the Lord puts his things in subdefined, suggestive shapes, yielding no satisfactory meaning to the mere intellect, but unfolding themselves to the conscience and heart, to the man himself, in the process of life-effort. According as the new creation, that of reality, advances in him, the man becomes able to understand the words, the symbols, the parables of the Lord. For life, that is, action, is alone the human condition into which the light of the Living can penetrate; life alone can assimilate life, can change food into growth.
From a sermon titled, "The Cause of Spiritual Stupidity."