Why can darkness not be restored to light?
"In him was life; and the life was the light of men.
And the light shineth in darkness; and the darkness comprehended it not."
John 1:4
Nobody had a single clue why Yeshua had come. They couldn't comprehend how this was the Messiah that had been promised to them. Peter and the rest of the Apostles had no clue what Yeshua was talking about, and they always had to ask what His parables meant. They were full of darkness.
"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
The darkness is not eliminated, it is filled with Light. After that Light enters, it lights up the whole body. We will still have things standing in the way of the Light, giving off shadows. But once all of these things are burned away by the refining Fire of this Light, the shadows disappear.
"Every good gift and every perfect gift is from above, and cometh down from the Father of lights, with whom is no variableness,
neither shadow of turning." James 1:117
"Give glory to the LORD your God, before he
cause darkness, and before your feet stumble upon the
dark mountains, and, while ye look for
light,
he turn it into the shadow of death, and make it gross darkness."
Jeremiah 13:16
"To open their eyes, and
to turn them from darkness to light, and from the power of Satan unto God, that they may receive forgiveness of sins, and inheritance among them which are sanctified by faith that is in me." Acts 26:18
"For ye
were sometimes darkness, but
now are ye light in the Lord: walk as children of light:"
Ephesians 5:8
We have all lived in darkness. We have all walked through the valley of the shadow of death. God did not eliminate us, He had mercy on us. He will have mercy on all of mankind, because He is the Creator of all things.
"Therefore have I hewed them by the prophets; I have slain them by the words of my mouth:
and thy judgments are as the light that goeth forth.
For I desired mercy, and not sacrifice; and the knowledge of God more than burnt offerings."
Hosea 6:4