The following is taken from 1988, April 15 pages 26-31
What About Relatives?
…God certainly realizes that carrying out his righteous laws about cutting off wrongdoers often involves and affects relatives. As mentioned above, when an Israelite wrongdoer was executed, no more family association was possible. In fact, if a son was a drunkard and a glutton, his parents were to bring him before the judges, and if he was unrepentant, the parents were to share in the just executing of him, ‘to clear away what is bad from the midst of Israel.’ (Deuteronomy 21:18-21) You can appreciate that this would not have been easy for them. Imagine, too, how the wrongdoer’s brothers, sisters, or grandparents felt. Yet, their putting loyalty to their righteous God before family affection could be lifesaving for them.
Cutting off from the Christian congregation does not involve immediate death, so family ties continue. Thus, a man who is disfellowshipped or who disassociates himself may still live at home with his Christian wife and faithful children. Respect for God’s judgments and the congregation’s action will move the wife and children to recognize that by his course, he altered the spiritual bond that existed between them. Yet, since his being disfellowshipped does not end their blood ties or marriage relationship, normal family affections and dealings can continue.
The situation is different if the disfellowshipped or disassociated one is a relative living outside the immediate family circle and home. It might be possible to have almost no contact at all with the relative. Even if there were some family matters requiring contact, this certainly would be kept to a minimum, in line with the divine principle: “Quit mixing in company with anyone called a brother that is a fornicator or a greedy person [or guilty of another gross sin], . . . not even eating with such a man.”—1 Corinthians 5:11. –Emboldening mine.
Understandably, this may be difficult because of emotions and family ties, such as grandparents’ love for their grandchildren. Yet, this is a test of loyalty to God, as stated by the sister quoted on page 26. Anyone who is feeling the sadness and pain that the disfellowshipped relative has thus caused may find comfort and be encouraged by the example set by some of Korah’s relatives.—Psalm 84:10-12. -- End of Quote.