5 Bible Verses about Heresy

I know thy works, and thy labour, and thy patience, and how thou canst not bear them which are evil: and thou hast tried them which say they are apostles, and are not, and hast found them liars:

Forasmuch as we have heard, that certain which went out from us have troubled you with words, subverting your souls, saying, Ye must be circumcised, and keep the law: to whom we gave no such commandment:

Which is not another; but there be some that trouble you, and would pervert the gospel of Christ.

For if he that cometh preacheth another Jesus, whom we have not preached, or if ye receive another spirit, which ye have not received, or another gospel, which ye have not accepted, ye might well bear with him.

And that because of false brethren unawares brought in, who came in privily to spy out our liberty which we have in Christ Jesus, that they might bring us into bondage:

A man that is an heretick after the first and second admonition reject; Knowing that he that is such is subverted, and sinneth, being condemned of himself.

If there come any unto you, and bring not this doctrine, receive him not into your house, neither bid him God speed: For he that biddeth him God speed is partaker of his evil deeds.

And brought them to the magistrates, saying, These men, being Jews, do exceedingly trouble our city, And teach customs, which are not lawful for us to receive, neither to observe, being Romans.

And when they had laid many stripes upon them, they cast them into prison, charging the jailor to keep them safely:

Neither can they prove the things whereof they now accuse me. But this I confess unto thee, that after the way which they call heresy, so worship I the God of my fathers, believing all things which are written in the law and in the prophets: And have hope toward God, which they themselves also allow, that there shall be a resurrection of the dead, both of the just and unjust. read more.
And herein do I exercise myself, to have always a conscience void of offence toward God, and toward men.

Saying, This fellow persuadeth men to worship God contrary to the law.