New Revised Standard Version
Therefore consider whether the light in you is not darkness.

Contemporary English Version
So be sure your light isn't darkness.

New American Bible
Take care, then, that the light in you not become darkness.

Douay-Rheims Bible
Take heed therefore that the light which is in thee be not darkness.

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

Proverbs 16:25 There is a way that seemeth to a man right: and the ends thereof lead to death.

Proverbs 26:12 Hast thou seen a man wise in his own conceit? there shall be more hope of a fool than of him.

Isaiah 5:20,21 Woe to you that call evil good, and good evil: that put darkness for light, and light for darkness: that put bitter for sweet, and sweet for bitter. . . .

Jeremiah 8:8,9 How do you say: We are wise, and the law of the Lord is with us? Indeed the lying pens of the scribes hath wrought falsehood. . . .

John 7:48,49 Hath any one of the rulers believed in him, or of the Pharisees? . . .

John 9:39-41 And Jesus said: For judgment I am come into this world: that they who see not may see; and they who see may become blind. . . .

Romans 1:22 For, professing themselves to be wise, they became fools.

Romans 2:19-23 Art confident that thou thyself art a guide of the blind, a light of them that are in darkness, . . .

1 Corinthians 1:19-21 For it is written: I will destroy the wisdom of the wise: and the prudence of the prudent I will reject. . . .

1 Corinthians 3:18-20 Let no man deceive himself. If any man among you seem to be wise in this world, let him become a fool, that he may be wise. . . .

James 3:13-17 Who is a wise man and endued with knowledge, among you? Let him shew, by a good contestation, his work in the meekness of wisdom. . . .

2 Peter 1:9 For he that hath not these things with him is blind and groping, having forgotten that he was purged from his old sins.

2 Peter 2:18 For, speaking proud words of vanity, they allure by the desires of fleshly riotousness those who for a little while escape, such as converse in error:

Revelation 3:17 Because thou sayest: I am rich and made wealthy and have need of nothing: and knowest not that thou art wretched and miserable and poor and blind and naked.