www.bible.com/111/pro.13.3.niv
From the fruit of their lips people enjoy good things, but the unfaithful have an appetite for violence. Those who guard their lips preserve their lives, but those who speak rashly will come to ruin.-Proverbs 13:2-3
We have already discussed how the tongue or the words that you speak have the power of life and death over others, but here we see Solomon go one step further by saying that if guard what comes out of your mouth you will preserve your life. The way you interact with others affects more than just the people that you are interacting with, but it also affects you. The harsher you are towards others the more isolated and alone you will be. This loneliness and isolation in most cases causes people to lash out more which only makes the problem worse rather than making it better. The only way to prevent this cycle from carrying on is to use the time of loneliness and isolation that has been caused by the harsh words you have spoken, to examine your motives for speaking those harsh words. If your motives for speaking those harsh words was to help build someone up, then apologize for the misunderstanding and tell the person what your true intent was. If the harsh words spoken out of anger or a need to hurt, then tell the person that and apologize. The key to all of this can be summed up in those way: “Make a tree good and its fruit will be good, or make a tree bad and its fruit will be bad, for a tree is recognized by its fruit. You brood of vipers, how can you who are evil say anything good? For the mouth speaks what the heart is full of. A good man brings good things out of the good stored up in him, and an evil man brings evil things out of the evil stored up in him. But I tell you that everyone will have to give account on the day judgment for every empty word they have spoken. For by your words you will be acquitted, and by your words you will be condemned.”(Matthew 12:33-37)