John 8:12 (KJV) Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life.
“Light” Jesus is the light God has given for the whole world. What the sun is to the physical earth that’s what Jesus is to the world of men. His life, His deeds, and His words reveal the truth about God and men and salvation and what God does and what men should do. This light reveals the difference between the real and the unreal, the true and the false. It shows the way to heaven.
But this light will be effective only for those who follow Christ (the Greek word indicates continuous following). Following means trusting and obeying. If we shrink back from Him we will remain in darkness and ignorance about the most important things of life. The followers of Jesus are in the light now and will see many truths they could not see otherwise, and they know where they are going. Unbelievers are in the dark now (and so all they can do is deny the light and speculate about spiritual things), and, if they do not repent and turn to the light, will go into eternal darkness.
The phrase “light of life” may mean light which is life, or which gives life, or which comes from life, or which shines on life, or perhaps all of them. Here is a question of great importance: Do we really want the light that Christ gives, or are we content with our darkness?
We try to control every inch of our lives is in some sense natural. It is not at all unusual to try and safeguard ourselves from danger and the unknown. The more control we have we feel we might be able to rest from a situation, (or others), the easier our lives will be. But, in matters of the spirit, we are not leaders. We cannot be masters of our fates in the way we wish. Rather, we are followers, we are disciples who need the word and light of the Lord God and His only begotten Son to guide us. No man in front of God is thus a master, for we are all His children, in need of compassion and care.