Gossip kills reputations. Gossip can forever smudge the reputations of people. Others may never know whether the rumors were true or not, but the taint is never forgotten.
Gossip also kills relationships.

We tend to think of gossip as one of those “little” sins. But when God talks about gossip, he puts it on the list with things like sexual immorality and murder. Why? Because it is so destructive to relationships. Gossip can tear apart friendships, families, and churches.

Gossip is talking about a situation with somebody who is neither a part of the solution nor a part of the problem. If we’re honest with ourselves, what we’re doing is making ourselves feel a little more important at somebody else’s expense. We’re talking about their hurts and their problems to make us feel like we’re morally superior to them.