5 Bible Verses about Heresy

I know thy works, and thy toil, and thy perseverance, and that thou cannot tolerate evil, and thou examined those who say themselves to be apostles, and are not, and found them false.

Since we have heard that certain men who went out from us have troubled you with words, disturbing your souls, saying to be circumcised, and to keep the law, to whom we did not command,

which is not another, except there are some who confuse you, and who want to pervert the good-news of the Christ.

For indeed if a man who comes, preaches another Jesus whom we did not preach, or ye receive another spirit that ye did not receive, or another good-news that ye did not accept, ye well tolerated it.

But that issue was because of those FALSE brothers smuggled in, who sneaked in to spy out our liberty that we have in Christ Jesus, so that they might enslave us,

Shun a factious man after a first and second admonition, knowing that such a man is perverted, and sins, being self-condemned.

If any man comes to you, and does not bring this doctrine, do not receive him into a house, and do not speak to him to rejoice. For he who speaks to him to rejoice, partakes of his evil works.

And after bringing them to the magistrates, they said, These men, being Jews, disturb our city, and proclaim customs that are not permitted for us to receive nor to do, being Romans.

And having laid many blows upon them, they cast them into prison, having ordered the jailor to guard them securely,

Neither can they prove against me of which things they now accuse me. But this I confess to thee, that according to the Way that they call a sect, so serve I the paternal God, believing all things written according to the law and the prophets, having hope toward God, which they themselves also await, to come to be a resurrection of the dead, both of the just and unjust. read more.
And in this I fashion myself, having a conscience always nonstumbling before God and men.

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