Forgiveness is always necessary when I have the perception that I failed to love and accept myself or another. Forgiveness allows me to let go of any feelings of inadequacy that arise in me. Forgiving myself is the affirmation that I do not buy into the feelings of inadequacy that invariably arise when I judge myself or another. Forgiveness keeps the slate of my heart open for Spirit to write on.
The light that shines in the eye is really the light of the heart. The light that fills the heart is the light of God, which is pure and separate from the light of intellect and senses.