Total blindness is rare; about one in a million. Most blind people can see light, and many can see enough of the darker shapes to get some idea of what is ahead. Today, we measure eyesight by how well we can see objects from twenty feet away; 20/20 vision is what most people have, but some can see smaller letters from twenty feet than the average. Many of us have vision problems. My vision is around 20/200, meaning I can see a letter on the chart that a normal person can read from 200 feet away. Living in modern America, I can slip on lenses which correct my sight to normal.
What is normal spiritual sight? How well can the average person see (understand) his relationship with the forces of good and evil? How well can he see God and how well can he see the Evil One? The process is so much like physical blindness that it is easier to use those terms. Can I tell the difference between light and dark?
In verse five, Jesus said, I am the light of the world. NIV His complete comment in 3-5 presents a complex idea. First is the idea that God allowed the man to be blind so that Jesus could heal him and use him as an example to all of us regarding spiritual blindness.
Second, Jesus turned to the day/night image, saying that we must work when we can see, or spiritually, we must work when we see what God wants us to do. When we are in the dark, we can do nothing for God. We must live in the light.
Third, night is coming. We must work while we are alive in this world for death will take us. Even Jesus had a limited time on earth, and he had much to accomplish. But notice as you read the Gospels that Jesus left much for us to do after he ascended to Heaven. We have been struggling for 2,000 years to do the mission and have much yet to do. God has things He wants me to do, but if I don’t complete them before I die (which is likely), He has plenty of others waiting to take over.
The body of Christ will work in the world with or without me.
You were once darkness, but now you are light in the Lord. NIV
Be righteous and do good.