Luke 11:35

Consider therefore whether the light that is in you is anything but mere darkness.

John 7:48-49

"has any one of the Rulers or of the Pharisees believed in him?

John 9:39-41

"I came into this world," said Jesus, "to judge men, that those who do not see may see, and that those who do see may become blind."

Romans 1:22

While boasting of their wisdom they became utter fools,

Romans 2:19-23

and have persuaded yourself that, as for you, you are a guide to the blind, a light to those who are in darkness,

1 Corinthians 1:19-21

For so it stands written, "I will exhibit the nothingness of the wisdom of the wise, and the intelligence of the intelligent I will bring to nought."

1 Corinthians 3:18-20

Let no one deceive himself. If any man imagines that he is wise, compared with the rest of you, with the wisdom of the present age, let him become "foolish" so that he may be wise.

James 3:13-17

Which of you is a wise and well-instructed man? Let him prove it by a right life with conduct guided by a wisely teachable spirit.

2 Peter 1:9

For the man in whom they are lacking is blind and cannot see distant objects, in that he has forgotten that he has been cleansed from his old sins.

2 Peter 2:18

For, while they pour out their frivolous and arrogant talk, they use earthly cravings--every kind of immorality--as a bait to entrap men who are just escaping from the influence of those who live in error.

Revelation 3:17

You say, I am rich, and have wealth stored up, and I stand in need of nothing; and you do not know that if there is a wretched creature it is *you* -- pitiable, poor, blind, 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 in him?
John 9:39
"I came into this world," said Jesus, "to judge men, that those who do not see may see, and that those who do see may become blind."
Romans 1:22
While boasting of their wisdom they became utter fools,
Romans 2:19
and have persuaded yourself that, as for you, you are a guide to the blind, a light to those who are in darkness,
1 Corinthians 1:19
For so it stands written, "I will exhibit the nothingness of the wisdom of the wise, and the intelligence of the intelligent I will bring to nought."
1 Corinthians 3:18
Let no one deceive himself. If any man imagines that he is wise, compared with the rest of you, with the wisdom of the present age, let him become "foolish" so that he may be wise.
James 3:13
Which of you is a wise and well-instructed man? Let him prove it by a right life with conduct guided by a wisely teachable spirit.
2 Peter 1:9
For the man in whom they are lacking is blind and cannot see distant objects, in that he has forgotten that he has been cleansed from his old sins.
2 Peter 2:18
For, while they pour out their frivolous and arrogant talk, they use earthly cravings--every kind of immorality--as a bait to entrap men who are just escaping from the influence of those who live in error.
Revelation 3:17
You say, I am rich, and have wealth stored up, and I stand in need of nothing; and you do not know that if there is a wretched creature it is *you* -- pitiable, poor, blind, naked.