This is the key to Naaman's representation. He represents a person who has had the Word, has learned truths from it, and even lived according to them. There was something of the marriage of good and truth within him, but it has become adulterated. This happened because, for some reason, he began to turn away from the truth, deliberately bending it, adding qualifications and conditions to the truth, conditions that would allow him to justify the breaking of them in his own mind. He began to look to himself instead of the Lord for the truth.
Many people look to themselves for their truth, in ignorance.
They do not really know that there is any other source of truth. The important thing about the person represented by Naaman is that while he does have the Word, and he has lived according to it, he has deliberately chosen to twist the truth for the sake of his own gain, making it false. When anyone qualifies the commandments of the Lord in the Word, and begins to believe the Lord's commandments apply to him only under certain circumstances, he has then become a spiritual leper, for he has profaned the truth. He has put himself in the place of the Lord, choosing what he will do from his own perverted truths. His spiritual body, reflecting the state of his mind and will, begins to be more and more disfigured as the twisted falsities that he has instead of truth begin to show in his spiritual face and body.