2 John 1:10

Now if any one come unto you, and bringeth not this doctrine, receive him not into your house, nor wish him success: for he,

Titus 3:10

reject therefore such an heretical man, after the first and second admonition; knowing that such a one is perverted,

Galatians 1:8-9

But tho' we or an angel from heaven should preach to you any other gospel than what we have preached to you; let him be accursed.

Romans 16:17-18

Now I exhort you, brethren, to mark those who cause divisions and offences, contrary to the doctrine which ye have learned:

But now I have written to you, not to associate with him, if any one, that is called a brother, be a whoremonger, or covetous, or an idolater, or a railer, or a drunkard, or rapacious; with such a one no not to eat.

2 Thessalonians 3:6

Now we charge you, brethren, in the name of our Lord Jesus Christ, to withdraw yourselves from every brother who walketh disorderly, and not according to the instruction which he received from us.