Titus 3:10
After one or two warnings to a man who is factious, stop having anything to do with him,
Romans 16:17
But I beg you, brothers, to keep on the lookout for those who stir up divisions and put hindrances in your way, in opposition to the instruction that you had, and always avoid them.
2 John 1:10
If anyone continuously comes to see you without bringing this teaching, you must stop welcoming him to your house and stop bidding him good morning,
Matthew 18:15-17
"Again, if your brother wrongs you, go and while alone with him show him the wrong. If he listens to you, you have won back your brother.
1 Corinthians 5:4-13
for when you met I too met with you in spirit by the power of our Lord Jesus --
1 Corinthians 11:19
Yes, indeed, there must be parties among you, in order that people of approved fitness may come to the front among you.
2 Corinthians 13:2
I have already warned those who formerly committed shocking sins, and all the rest, and though so far away I warn them now, as I did on my second visit, that if I come back I will not spare them,
Galatians 5:12
I almost wish that these men who are upsetting you would go all the way, and have themselves mutilated.
Galatians 5:20
idolatry, sorcery, enmity, quarreling, jealousy, anger, intrigues, dissensions, party-spirit,
2 Thessalonians 3:6
Now we charge you, brothers, on the authority of the Lord Jesus Christ, to hold yourselves aloof from any brother who is living as a shirker instead of following the teachings you received from us.
2 Thessalonians 3:14
If anyone refuses to obey what we have said in this letter, mark that person and stop having anything to do with him, so that he will feel ashamed of it.
2 Timothy 3:5
keeping up the forms of religion but not giving expression to its power. Avoid such people.
2 Peter 2:1
Now there were false prophets among the people, just as there will be false teachers among you too, who will insidiously introduce destructive heresies and deny the Master who has bought them, thus bringing on themselves swift destruction.