Luke 11:35

Take heed, therefore, lest the light in you be darkness.

John 7:48-49

Did any one of the rulers believe on Him, or of the Pharisees?

John 9:39-41

And Jesus said, "For judgment came I into the world; that those who see not may see, and that those who see may become blind."

Romans 1:22

Professing themselves to be wise, they became fools,

Romans 2:19-23

and have become confident that you are a guide of the blind, a light to those in darkness,

1 Corinthians 1:19-21

For it has been written, "I will destroy the wisdom of the wise, and the discernment of the discerning will I set aside."

1 Corinthians 3:18-20

Let no one deceive himself. If any one among you thinks that he is wise in this world, let him become a fool, that he may become wise.

James 3:13-17

Who is wise and intelligent among you? Let him show, by his good conduct, his works in meekness of wisdom.

2 Peter 1:9

for he to whom these things are lacking is blind, seeing dimly, having forgotten the cleansing from his old sins.

2 Peter 2:18

For, uttering great swelling words of vanity, they entice, in desires of the flesh, by their lasciviousness, those just escaping from those who live in error;

Revelation 3:17

Because you say, 'I am rich, and have gotten riches, and have need of nothing'; and do not know that you are the wretched one, and pitiable, and poor, and blind, and naked!

Treasury of Scripture Knowledge

Summary

Take heed therefore that the light which is in thee be not darkness.

Bible References

General references

John 7:48
Did any one of the rulers believe on Him, or of the Pharisees?
John 9:39
And Jesus said, "For judgment came I into the world; that those who see not may see, and that those who see may become blind."
Romans 1:22
Professing themselves to be wise, they became fools,
Romans 2:19
and have become confident that you are a guide of the blind, a light to those in darkness,
1 Corinthians 1:19
For it has been written, "I will destroy the wisdom of the wise, and the discernment of the discerning will I set aside."
1 Corinthians 3:18
Let no one deceive himself. If any one among you thinks that he is wise in this world, let him become a fool, that he may become wise.
James 3:13
Who is wise and intelligent among you? Let him show, by his good conduct, his works in meekness of wisdom.
2 Peter 1:9
for he to whom these things are lacking is blind, seeing dimly, having forgotten the cleansing from his old sins.
2 Peter 2:18
For, uttering great swelling words of vanity, they entice, in desires of the flesh, by their lasciviousness, those just escaping from those who live in error;
Revelation 3:17
Because you say, 'I am rich, and have gotten riches, and have need of nothing'; and do not know that you are the wretched one, and pitiable, and poor, and blind, and naked!