The eye is the lamp of the body, and the lamp symbolizes the light. The eye is thus the light by which man sees everything. The eye is the mirror by which we can notice the feelings, thoughts and sensations of a man and woman. If they love us, we will see the love in their look. If they hate us, we will sense the hate in their eyes. If one has anger, rage or a grudge in his heart, this will appear in their eyes. If he has feelings of cruelty, aggressiveness or revenge, his eyes will reveal them. Deception appears in his eyes. Pride and arrogance glitter in his eyes as well as jealousy and envy and even disgust, impatience and other feelings.
What then is the meaning of “if your eye is good?” “Good” means as created by God, without the addition of the wrong human sensations, without the addition of spite, craftiness, desire and pride, for with these additions it is not good.
Let us give another example. Our first parents, Adam and Eve, their eyes were pure in the beginning. The tree of knowledge of good and evil was in the midst of the garden (Genesis 3:3). They must have passed by it every day without any trouble, but when the temptation of the serpent was added to their pure eyes that they “shall be as god, knowing good and evil” (Genesis 3:5), the eye was no more pure. Thus “when the woman saw that the tree was good for food, and that it was pleasant to the eyes and a tree to be desired” (Genesis 3:6) everything was completely changed, for the eye has lost its purity. Just as their look at the tree was changed, their look at each other was changed as well.
So when your eye is kind, without any addition of desire, temptation or hidden thoughts, all your body is bright. But when anything else is added to your eye, such as anger or revenge, your features change and your blood pressure increases. Your feelings leave their touch on your body and then your body will look dark.
Repent quickly if you are angry, depressed or in superficial joy! Come back to Jesus. He is the true and guiding light for you and your eyes.