Consider the tongue a reflection of the soul.

What you say can and will be used against you in the court of public opinion. Others perceive your character based on the words you use. You are a witness whether it is for the Lord or for another. Carefully choose your words, for reckless words can destroy another person and testify to whom you belong. If the words are many that come from your lips, then pride and deceit are sure to follow. Beware of that poison. Do not speak evil about another, and consider the words you use. A foul tongue reflects an undisciplined heart.