A. Excommunication of those who cause division:

PRO 22:10. Cast out the scorner, and contention shall go out; yea, strife and reproach shall cease.

MAT 18:15. Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.

MAT 18:16. But if he will not hear thee, then take with thee one or two more, that in the mouth of two or three witnesses every word may be established.

MAT 18:17. And if he shall neglect to hear them, tell it unto the church: but if he neglect to hear the church, let him be unto thee as an heathen man and a publican.

ROM 16:17. Now I beseech you, brethren, mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them.

1COR 5:11. But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.

1COR 5:12. For what have I to do to judge them also that are without? do not ye judge them that are within?

1COR 5:13. But them that are without God judgeth. Therefore put away from among yourselves that wicked person.

2TH 3:6. Now we command you, brethren, in the name of our Lord Jesus Christ, that ye withdraw yourselves from every brother that walketh disorderly, and not after the tradition which he received of us.

1TI 6:3. If any man teach otherwise, and consent not to wholesome words, even the words of our Lord Jesus Christ, and to the doctrine which is according to godliness;

1TI 6:5. Perverse disputings of men of corrupt minds, and destitute of the truth, supposing that gain is godliness: from such withdraw thyself.

TIT 3:10. A man that is an heretick after the first and second admonition reject;

1TI 6:3. If any man teach otherwise, and consent not to wholesome words, even the words of our Lord Jesus Christ, and to the doctrine which is according to godliness;

1TI 6:4. He is proud, knowing nothing, but doting about questions and strifes of words, whereof cometh envy, strife, railings, evil surmisings,

1TI 6:5. Perverse disputings of men of corrupt minds, and destitute of the truth, supposing that gain is godliness: from such withdraw thyself.

B. Partial excommunication:

2TH 3:14. And if any man obey not our word by this epistle, note that man, and have no company with him, that he may be ashamed.