“Let no corrupt word proceed out of your mouth, but what is good for necessary edification, that it may impart grace to the hearers” Ephesians 4:29.
Words carry power. If they are charged with energy: good or bad. If your heart is full of hatred, contempt, envy and etc. your words will have destroying influence on those to whom you speak. Therefore, the Word of God teaches us to carefully choose what comes out of our mouths. We are also taught to protect our hearts because the source of life is there. We are to speak things that bring blessing, joy, love, peace and everything that is Christ like. Speaking that way will not only produce those good things in lives of listeners, but also ours as we reap what we sow in others.