5 Bible Verses about Heresy

I know your works and your labor and your patience, and that you cannot bear the wicked, and you tried those who say they are apostles and are not, and found them false;

Since we heard that some going out from us have troubled you with words subverting your souls, to whom we gave no charge,

which is not another; but there are some who disturb you and wish to subvert the gospel of Christ.

For if he that comes preaches another Jesus whom we did not preach, or you receive another spirit which you did not receive, or another gospel which you did not receive, you might well bear it;

but on account of false brothers brought in secretly to act as spies against our liberty which we have in Christ Jesus, to bring us into servitude,

A man that is a heretic, after the first and second admonition, reject, knowing that such a one is subverted, and sins, being self-condemned.

If any one comes to you and brings not this doctrine, receive him not into your houses, and salute him not; for he that salutes him is a partaker of his evil works.

and bringing them before the prefects said, These men, being Jews, greatly trouble the city, and preach customs which it is not lawful for us, being Romans, to receive or observe.

and having inflicted many blows on them cast them into prison, charging the jailer to keep them safely;

neither can they prove the things of which they now accuse me. But this I confess to you, that in the way which they call a heresy, so worship I the God of my fathers; believing all things written in the law and the prophets, having a hope in God which they also hold, that there will be a resurrection both of the righteous and wicked. read more.
And in this also I endeavor always to have a conscience without offense towards God and man.

saying, This man persuades men to worship God contrary to the law.