Titus 3:10
After a first and a second warning have no more to do with a factious person;
Romans 16:17
Brothers, I beg of you to keep your eye on those who stir up dissensions and put hindrances in your way, contrary to the doctrine which you have been taught. Avoid them.
2 John 1:10
If anyone comes to you and does not bring this doctrine, do not admit him to the house ??do not even greet him,
Matthew 18:15-17
If your brother sins [against you], go and reprove him, as between you and him alone. If he listens to you, then you have won your brother over;
1 Corinthians 5:4-13
by the authority of our Lord Jesus Christ; I have met with you in spirit, and by the power of our Lord Jesus
1 Corinthians 11:19
There must be parties among you, if genuine Christians are to be recognized.
2 Corinthians 13:2
I warned you already, on my second visit, and I warn you now before I come, both you who sinned some time ago and the rest of you as well, that I will spare no one if I come back.
Galatians 5:12
O that those who are upsetting you would get themselves castrated!
Galatians 5:20
idolatry, magic, quarrels, dissension, jealousy, temper, rivalry, factions, party-spirit,
2 Thessalonians 3:6
Brothers, we charge you in the name of the Lord Jesus Christ to shun any brother who is loafing, instead of following the rule you got from us.
2 Thessalonians 3:14
Only, if anyone will not obey our orders in this letter, mark that man, do not associate with him ??that will make him feel ashamed!
2 Peter 2:1
Still, false prophets did appear among the People, as among you also there will be false teachers, men who will insinuate destructive heresies, even disowning the Lord who ransomed them; they bring rapid destruction on themselves,