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,
Titus 3:10
After a first and a second warning have no more to do with a factious person;
Galatians 1:8-9
Now even though it were myself or some angel from heaven, whoever preaches a gospel that contradicts the gospel I preached to you, God's curse be on him!
Romans 16:17-18
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.
1 Corinthians 5:11
What I now write is that you are not to associate with any so-called brother who is immoral or lustful or idolatrous or given to abuse or drink or robbery. Associate with him! Do not even eat with him!
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!
1 Corinthians 16:22
'If any one has no love for the Lord, God's curse be on him! Maran atha!
2 John 1:11
for he who greets him shares in his wicked work.