5 Bible Verses about Heresy

I know your works, your toil and your patient endurance. I know that you cannot bear evil men, but you have tested those who call themselves apostles and are not, and have found them to be false;

Since we have heard that some persons from us have disturbed you with words, unsettling your minds, although we gave them no instructions,

which is really not another gospel; but there are some who are disturbing you, and want to pervert the gospel of Christ.

For if someone comes to you and preaches a Jesus other than the one we preached, or if you receive a different spirit from the one you received, or a different gospel from the one you accepted, you put up with it easily enough.

But it was because of the false brethren secretly brought in, who had slipped in to spy out our freedom which we have in Christ Jesus, in order to bring us into bondage.

Warn a man who is factious once, and then warn him a second time. After that, have nothing to do with him, knowing that such a man is perverted and sinful; he is self-condemned.

If anyone comes to you and does not bring this teaching, do not receive him into your house or give him any greeting; for he who greets him shares in his wicked work.

and when they had brought them to the magistrates they said, "These men are Jews and they are throwing our city into an uproar. They advocate customs which it is not lawful for us Romans to accept or practice."

And when they had inflicted many blows upon them, they threw them into prison, charging the jailer to guard them securely.

Neither can they prove to you the charges they are now making against me. But this I admit to you, that according to the Way which they call a sect I do worship the God of our fathers, believing everything that is in accordance with the Law and that is written in the Prophets, having a hope in God, which these men cherish themselves, that there will certainly be a resurrection of both the righteous and the wicked. read more.
And so I do my best always to have a clear conscience before God and men.

saying, "This man is persuading men to worship God contrary to the law."