Titus 3:10
A man that is a heretic, after the first and second admonition, reject,
Romans 16:17
I exhort you, brothers, to observe those that cause dissensions and offenses contrary to the teaching which you learned, and avoid them;
2 John 1:10
If any one comes to you and brings not this doctrine, receive him not into your houses, and salute him not;
Matthew 18:15-17
But if your brother sins against you, go and reprove him between you and him alone. If he hears you, you have gained your brother.
1 Corinthians 5:4-13
in the name of our Lord Jesus you being assembled together and my spirit with the power of our Lord Jesus
1 Corinthians 11:19
For it is necessary that there should be heresies among you, that the approved may be manifest among you.
2 Corinthians 13:2
I have said before, and I now foretell as if present a second time, although absent, to those who have already sinned and to all the rest, that if I come again I will not spare;
Galatians 5:12
I would that they were cut off that disturb you.
Galatians 5:20
idolatry, magic, enmities, strife, envy, anger, contentions, dissensions, heresies,
2 Thessalonians 3:6
And we charge you, brothers, in the name of our Lord Jesus Christ, to withdraw from every brother who walks disorderly and not according to the tradition which you received from us.
2 Thessalonians 3:14
But if any one obeys not our word by this epistle, mark that one, and have no association with him, that he may be ashamed;
2 Timothy 3:5
having a form of piety but denying its power; and these avoid.
2 Peter 2:1
But there were also false prophets among the people, as there shall also be false teachers among you, who shall bring in by stealth destructive heresies, even denying the master that bought them, bringing on themselves swift destruction;