I believe that words are powerful. We can curse mankind or we can bless mankind.
Many people follow the sinful nature so they will curse other people. They will insult because they are controlled by the sinful nature. The hateful person will destroy mankind. This person is ugly and disrespectful.
We have many disrespectful people in this world. There are many programs promote this idea. It is called gossip.
Mankind need a clean heart. The clean heart needs to speak with love and truth. The Holy Spirit can bring a new heart to mankind. Many times, a person can have a dirty heart then the person will have a clean heart.
Christ died on the cross and if we hate our sins then we can turn back to God. A person with a new heart will hate the sin of gossip.
The follower of Jesus needs to examine the heart. Sometimes the dark heart wants to return so they will speak bad words because the heart is full of sin. The follower needs to repent and ask God for a new heart.