2 John 1:10
If anyone comes to you, and does not bring this teaching, do not receive him into your house, and do not welcome him,
Titus 3:10
Avoid a factious man after a first and second warning;
Galatians 1:8-9
But even though we, or an angel from heaven, should proclaim to you a "good news" other than that which we preached to you, let him be cursed.
Romans 16:17-18
Now I beg you, brothers, look out for those who are causing the divisions and occasions of stumbling, contrary to the doctrine which you learned, and turn away from them.
1 Corinthians 5:11
But as it is, I wrote to you not to associate with anyone who is called a brother who is a sexual sinner, or covetous, or an idolater, or a slanderer, or a drunkard, or an extortioner. Do not even eat with such a person.
2 Thessalonians 3:6
Now we command you, brothers, in the name of our Lord Jesus Christ, that you withdraw yourselves from every brother who walks in rebellion, and not after the tradition which they received from us.
2 Thessalonians 3:14
If any man does not obey our word in this letter, note that man, that you have no company with him, to the end that he may be ashamed.
Genesis 24:12
He said, "O LORD, the God of my master Abraham, please give me success this day, and show kindness to my master Abraham.
Psalm 129:8
Neither do those who go by say, "The blessing of the LORD be on you. We bless you in the name of the LORD."
1 Corinthians 16:22
If any man does not love the Lord, let him be accursed. Come, Lord.
2 Timothy 3:5-6
holding a form of godliness, but having denied the power thereof. Turn away from these, also.
2 John 1:11
for he who welcomes him participates in his evil works.