Further reflections on Jean Guyon's conversion experience:
Madam Guyon, in her Autobiography, makes a number of practical remarks on the nature of her religious experience at this time.
Recognizing a distinction, which is important in the analysis of inward experience, she regarded the change which she underwent at this period, as not merely an intellectual illumination, but as truly a change of the heart. It is true, undoubtedly, that she had received new light. She had been led to see more distinctly than ever before the extreme perversity and blindness of the natural mind. She had now a clearer perception both of what God is, and of what he requires; and especially of the way of forgiveness and salvation by faith in Christ alone.
But perception is not love. The righting of the understanding is not necessarily identical with the rectification of the sensibilities. The understanding, enlightened of God, will sometimes dictate what the heart, in its opposition to God, will be slow to follow. This was not her case. Her understanding was not only enlightened, but her heart was renewed.
— edited from The Life of Madame Guyon Volume 1, Chapter 7.