Titus 3:10
A divisive and dissentious man should be admonished, and after two times have nothing to do with that man.
Romans 16:17
Now I beseech you, brothers, mark those who cause divisions and offenses contrary to the doctrine you have learned and avoid them.
2 John 1:10
Do not receive anyone into your house who comes to you and does not bring this teaching. Give him no greeting!
Matthew 18:15-17
If your brother does wrong to you, go to him in private. Clearly explain his error between you and him. If he listens to you, you have gained your brother back.
1 Corinthians 5:4-13
When you assemble in the name and with the power of our Lord Jesus Christ, I will be with you in spirit.
1 Corinthians 11:19
For there must be also heresies among you that they that are approved may be made manifest among you.
2 Corinthians 13:2
I told you in advance as if I were present the second time. Being absent now I write to those who have sinned and to all others. If I come again I will not spare you.
Galatians 5:12
I would that they that unsettle you would even go beyond circumcision.
Galatians 5:20
idolatry, sorcery, enmities, strife, jealousy, wrath, contentions, divisions, sects,
2 Thessalonians 3:6
Our friends, we command you in the name of our Lord Jesus Christ to keep away from all believers who walk disorderly and who do not follow the instructions that we gave them.
2 Thessalonians 3:14
If anyone does not obey our word in this letter, take special note of that person and do not associate with him, so that he will be put to shame.
2 Timothy 3:5
having a form of godliness, but denying its power. Stay away from people like this!
2 Peter 2:1
There arose false prophets among the people. There will be false teachers among you! They will privately bring in destructive heresies (contrary doctrines), denying even the Master who bought them. They bring swift destruction on themselves.