Matthew 6:23
"but if your eye is unsound, your whole body will be darkened. If then the very light within you is darkness, how dense is that darkness!
Luke 11:34-35
"The lamp of the body is your eye; when your eye is single then your whole body is full of light; but when it is evil your whole body is full of darkness.
Ephesians 5:8
For you were once darkness, but are now in the Lord.
Treasury of Scripture Knowledge
Summary
Then I saw that wisdom excelleth folly, as far as light excelleth darkness.
Bible References
Light
Matthew 6:23
"but if your eye is unsound, your whole body will be darkened. If then the very light within you is darkness, how dense is that darkness!
Luke 11:34
"The lamp of the body is your eye; when your eye is single then your whole body is full of light; but when it is evil your whole body is full of darkness.
Ephesians 5:8
For you were once darkness, but are now in the Lord.