"And the tongue is a fire, a world of iniquity. The tongue is so set among our members that it defiles the whole body and sets on fire the course of nature, and it is set on fire by hell." (James 3:6)
It's quite frightening how serious it is to misuse our tongue. I don't think that many of us think of this when we speak to others. Many times we speak without first filtering our words. Especially during those angry or depressed times, we may have said some hurtful things to our loved ones that we never meant to say. Hopefully we can all be more careful in our speech to edify and comfort more than to judge and criticize.