The eye is referred to as the lamp or light of the body (Luke 11:34). What you see is what you put out when the need arises. Students read before an exam because when they read, the information is stored in the brain and can be retrieved when writing an examination. The body is reflective of what has entered into it by what you feed your eyes.
What you look at, what you feed your eyes is what it feeds to your body. The power of the eye is established in Matthew 5:28 saying,
“But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.”
Sin often starts from what your eyes see because it is what your eyes see that is registered in the heart. The Bible says renew your mind (Romans 12:1-2). Reading the Word is a way of mind renewal which means the more you see the Word, the more it causes a change in you heart.
What you feed your eyes with is what it will feed to your heart? If your eyes are fed only with darkness then your body will be dark but if they are fed with light, then your body will be filled with light.
When we became born again, we were given a new heart, a heart of flesh and the right spirit (Ezekiel 36:26), but this heart gets corrupted when it is fed with the wrong things. The things you see corrupt your heart. King David sinned because of what he saw (Beersheba; 2 Samuel 11: 2).
Be careful with what you feed your eyes with because it can either cause a positive or a negative change in you. Proverbs 4:23 (CEV) says,
“Carefully guard your thoughts because they are the source of true life.”
Guard your thoughts also means guard what you see because you think on the things you see. Feed your eyes with positive things and your heart and mind will be fixed on positivity. Be intentional about the things you see and in cases where you cannot control what you see, keep speaking to yourself the words of God that you have seen so as to keep your mind renewed.
Be intentional in keeping your heart a home for God’s spirit to dwell. Be intentional about what you are feeding your heart.