1 Corinthians 15:33

He that walketh with wise men shall be wise: but a companion of fools shall be destroyed.

And Jesus answered and said unto them, Take heed that no man deceive you.

Your glorying is not good. Know ye not that a little leaven leaveneth the whole lump?

Forsake the foolish, and live; and go in the way of understanding.

Let no man deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience.

Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap.

Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,

For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.

And many shall follow their pernicious ways; by reason of whom the way of truth shall be evil spoken of.

Looking diligently lest any man fail of the grace of God; lest any root of bitterness springing up trouble you, and thereby many be defiled;

And many false prophets shall rise, and shall deceive many.

And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him.

And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved.