2 Thessalonians 3:14
14 If anyone does not obey what we say in this letter, take note of that person, and fhave nothing to do with him, that he may be ashamed.
Matthew 18:17
17 If he refuses to listen to them, qtell it to the church. And if he refuses to listen even to the church, rlet him be to you as sa Gentile and sa tax collector.
2 Timothy 3:5
5 having the appearance of godliness, but gdenying its power. hAvoid such people.
1 Corinthians 5:9
9 I wrote to you in my letter jnot to associate with sexually immoral people—
2 John 10
10 If anyone comes to you and does not bring this teaching, rdo not receive him into your house or give him any greeting,