"The heavens declare the glory of God; and the firmament sheweth his handywork.
A poet, William Blake, described how people can see things, but miss them this way:
"This life's dim window of the soul
Distorts the heavens form pole to pole
And leads you to believe a lie
When you see with, not through, the eye."
Jesus spoke of how eyes can see things and yet the mind is not always able to see what is seen. He, the Creator of the eye, asked His disciples, "Having eyes, see ye not?" They had just seen some outstanding miracles, but still did not grasp those things that He wanted to teach them.
The Holy War, spoke of an entryway to the soul of man called Eye-Gate. Christ spoke of the powerful influence of the eye, and used an illustration of it to help us understand why we need to direct our attention towards Him. He said,
"The light of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light. But if thine eye be evil, thy whole body shall be full of darkness. If therefore the light that is in thee be darkness, how great is that darkness!" Matthew 6:22-23.
It is sin that causes people to be unable to see God. In our current state, we cannot see God and live, but when Christ returns and changes our bodies we will be given eyes that will see him. (1 John 3:2)