Luke 11:35

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

John 7:48-49

Has any one of the rulers, or of the Pharisees believed on him?

John 9:39-41

And Jesus said: For judgment have I come into this world, that those who see not, may see; and that those who see, may become blind.

Romans 1:22

professing to be wise, they became foolish,

Romans 2:19-23

if you are also confident that you yourself are a guide for the blind, a light to those who are in darkness,

1 Corinthians 1:19-21

For it is written: I will destroy the wisdom of the wise; and I will set aside the understanding of the prudent.

1 Corinthians 3:18-20

Let no one deceive himself: if any one among you is considered as wise in this age, let him become a fool, that he may be wise.

James 3:13-17

Who is wise and discreet among you? Let him show, by a good behavior, his works, with the meekness of wisdom.

2 Peter 1:9

But he who is wanting in these things is blind, and closes his eyes, and has forgotten that he was cleansed from his old sins.

2 Peter 2:18

For by speaking boastful words of folly, they allure through the lusts of the flesh, and through lasciviousness, those who had really escaped from those who live in error.

Revelation 3:17

Because you say I am rich, and abound in wealth, and have need of nothing, and know not that you are miserable 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
Has any one of the rulers, or of the Pharisees believed on him?
John 9:39
And Jesus said: For judgment have I come into this world, that those who see not, may see; and that those who see, may become blind.
Romans 1:22
professing to be wise, they became foolish,
Romans 2:19
if you are also confident that you yourself are a guide for the blind, a light to those who are in darkness,
1 Corinthians 1:19
For it is written: I will destroy the wisdom of the wise; and I will set aside the understanding of the prudent.
1 Corinthians 3:18
Let no one deceive himself: if any one among you is considered as wise in this age, let him become a fool, that he may be wise.
James 3:13
Who is wise and discreet among you? Let him show, by a good behavior, his works, with the meekness of wisdom.
2 Peter 1:9
But he who is wanting in these things is blind, and closes his eyes, and has forgotten that he was cleansed from his old sins.
2 Peter 2:18
For by speaking boastful words of folly, they allure through the lusts of the flesh, and through lasciviousness, those who had really escaped from those who live in error.
Revelation 3:17
Because you say I am rich, and abound in wealth, and have need of nothing, and know not that you are miserable and pitiable and poor and blind and naked,